Cardona Senior High School First Quarterly Examinations in General Physics 1 PDF

Republic of the Philippines Region IV-A CALABARZON Division of Rizal District of Cardona CARDONA SENIOR HIGH SCHOOL...

Republic of the Philippines Region IV-A CALABARZON Division of Rizal District of Cardona CARDONA SENIOR HIGH SCHOOL Cardona, Rizal “Aiming High, Soaring High in Making Difference” FIRST QUARTERLY EXAMINATIONS IN GENERAL PHYSICS 1 Name: _______________________________________________________ Date:________________ Grade and Section: _____________________________________________ Score:_______________ Directions: Answer the following correctly, show your complete solution and write the letter on the space provided. 1. Which of the following statements about vectors and scalars is TRUE? a. A vector is a large quantity and a scalar is a small quantity. b. A scalar quantity has a magnitude and a vector quantity does not. c. A vector quantity is described with a direction and a scalar is not. d. The quantity 9.8 m/s/s is an acceleration value and as such is a vector quantity. 2. Which of the following statements about distance and/or displacement is TRUE? a. Distance is a vector quantity and displacement is a scalar quantity. b. A person makes a round-trip journey, finishing where she started. The displacement for the trip is 0 and the distance is some nonzero value. c. A person starts at position A and finishes at position B. The distance for the trip is the length of the segment measured from A to B. d. The diagram below depicts the path of a person walking to and fro from position A to B to C to D. The distance for this motion is 100 yds. 3. Which of the following statements about velocity and/or speed is TRUE? a. Both speed and velocity refer to how fast an object is moving. b. Person X moves from location A to location B in 5 seconds. Person Y moves between the same two locations in 10 seconds. Person Y is moving with twice the speed as person X. c. The direction of the velocity vector is dependent upon two factors: the direction the object is moving and whether the object is speeding up or slowing down. d. The diagram below depicts the path of a person walking to and fro from position A to B to C to D. The entire motion takes 8 minutes. The average speed for this motion is approximately 11.3 yds/min. 4. Which of the following statements about acceleration is NOT TRUE? a. Accelerating objects MUST be changing their velocity. b. The direction of the acceleration vector is dependent upon two factors: the direction the object is moving and whether the object is speeding up or slowing down. c. An object which is slowing down has an acceleration. d. An object that is moving upwards and slowing down has an upwards acceleration. 5. Which of the following statements about position-time graphs is TRUE? a. Position-time graphs cannot be used to represent the motion of objects with accelerated motion. b. The slope on a position-time graph is representative of the acceleration of the object. c. A straight, diagonal line on a position-time graph is representative of an object with a constant velocity. d. If an object is at rest, then the position-time graph will be a horizontal line located on the time-axis. 6. Which of the following statements about velocity-time graphs is NOT TRUE? a. The slope on a velocity-time graph is representative of the acceleration of the object. b. The area on a velocity -time graph is representative of the change in position of the object. c. An accelerated object's motion will be represented by a curved line on a velocity-time graph. d. If an object is at rest, then the velocity-time graph will be a line with zero slope.  7. Which of the following statements about free fall and the acceleration of gravity is TRUE? a. An object that is free-falling is acted upon by the force of gravity alone. b. A falling skydiver which has reached terminal velocity is considered to be in a state of free fall. c. A ball is thrown upwards and is rising towards its peak. As it rises upwards, it is NOT considered to be in a state of free fall. d. A ball is thrown upwards, rises to its peak and eventually falls back to the original height. As the ball rises, its acceleration is upwards; as it falls, its acceleration is downwards. For items 8-10 consider the plots below, determine the displacement of the object... a. from 0.0 - 5.0 b. from 5.0 - 10.0 c. from 0.0 - 15.0 seconds seconds seconds 8 9 10 For items 11-14 Determine the acceleration (in m/s2) of an object which..... 11 moves in a straight line with a constant speed of 20.0 m/s for 12.0 seconds 12 changes its velocity from 12.1 m/s to 23.5 m/s in 7.81 seconds 13 changes its velocity from 0.0 mi/hr to 60.0 mi/hr in 4.20 seconds 14 accelerates from 33.4 m/s to 18.9 m/s over a distance of 109 m 15 If an object has an acceleration of 0 m/s2, then one can be sure that the object is not ____. a. moving b. changing position c. changing velocity 16 If car A passes car B, then car A must be ____ a. accelerating. b. accelerating at a greater rate than car B. c. moving faster than car B and accelerating more than car B. d. moving faster than car B, but not necessarily accelerating. 17. Which one of the following is NOT consistent with a car which is accelerating? a. A car is moving with an increasing speed. b. A car is moving with a decreasing speed. c. A car is moving with a high speed. d. A car is changing direction. 18. A fullback is running down the football field in a straight line. He starts at the 0-yard line at 0 seconds. At 1 second, he is on the 10-yard line; at 2 seconds, he is on the 20-yard line; at 3 seconds, he is on the 30-yard line; and at 4 seconds, he is on the 40-yard line. This is evidence that a. he is accelerating b. he is covering a greater distance in each consecutive second. c. he is moving with a constant speed (on average) 19. If an object is moving eastward and slowing down, then the direction of its acceleration vector is ____. a. eastward b. westward c. neither d. not enough info to tell 20. Ten seconds after being dropped from rest, a free-falling object will be moving with a speed of ____. a. about 10 m/s. b. about 50 m/s. c. about 100 m/s. d. more than 100 m/s. 21. A baseball pitcher delivers a fast ball. During the throw, the speed of the ball increases from 0 to 30.0 m/s over a time of 0.100 seconds. The average acceleration of the baseball is ____ m/s2. a. 3.00 b. 30.0 c. 300. d. 3000 e. none of these 22. On takeoff, a rocket accelerates from rest at a rate of 50.0 m/s2 for exactly 1 minute. The rocket's speed after this minute of steady acceleration will be ____ m/s. a. 50.0 b. 500. c. 3.00 x 103 d. 3.60 x 103 e. none of these 23. When a rock is dropped, it will accelerate downward at a rate of 9.8 m/s2. If the same rock is thrown downward (instead of being dropped from rest), it acceleration will be ____. (Ignore air resistance effects.) a. less than 9.8 m/s2 b. 9.8 m/s2 c. more than 9.8 m/s2 23. Consider drops of water that leak from a dripping faucet at a constant rate. As the drops fall they ____. a. get closer together b. get farther apart c. remain at a relatively fixed distance from one another 24. Renatta Oyle is again found driving her '86 Yugo down Lake Avenue, leaving the following trail of oil drops on the pavement. If her car is moving from right to left, then... a. her velocity has a rightward direction and her acceleration has a rightward direction. b. her velocity has a rightward direction and her acceleration has a leftward direction. c. her velocity has a leftward direction and her acceleration has a rightward direction. d. her velocity has a leftward direction and her acceleration has a leftward direction. For items 25-28 The velocity-time graph below depicts the motion of an automobile as it moves through Glenview during rush hour traffic. Use the graph to answer questions #25 - #28. 25. Determine the displacement of the automobile during the following intervals of time. a. t = 0s-5s b. t=5s-15s c. t=15s-20s 26. Determine the velocity of the automobile at the following instant(s) in time. a. T=3s b.t=8s c. t=17s 27. Determine the acceleration of the automobile during the following intervals of time. t=0s-5s t = 5 s - 15 s t = 15 s - 20 s 28. Using complete sentences and the language of physics, describe the motion of the automobile during the entire 20.0 seconds. Explicitly describe any changes in speed or direction which might occur; identify intervals of time for which the automobile is at rest, the automobile is moving with constant speed, or the automobile is accelerating. 29. Which of the following statements are true of inertia? List all that apply. a. Inertia is a force. b. Inertia is a force which keeps stationary objects at rest and moving objects in motion at constant velocity. c. Inertia is a force which brings all objects to a rest position. d. A more massive object has more inertia than a less massive object. 30. Which of the following statements is not true of the quantity mass? a. The mass of an object is dependent upon the value of the acceleration of gravity. b. The standard metric unit of mass is the kilogram. c. Mass depends on how much stuff is present in an object. d. People in Weight Watcher's are really concerned about their mass (they're mass watchers).  31. Which of the following statements are true of an object that experiences balanced forces (or unbalanced forces)? List all that apply. a. If a person is moving to the right, then the forces acting upon it are NOT balanced. b. A balance of forces is demonstrated by an object which is slowing to a stop. c. It would take an unbalanced force to keep an object in motion. d. None of the Above 32. Consider Newton's first law of motion to determine which of the following statements is true? a. Newton's first law of motion is applicable to both moving and nonmoving objects. b. If a football is moving upwards and rightwards towards the peak of its trajectory, then there are both rightwards and upwards forces acting upon it. c. It would take an unbalanced force to keep an object in motion. d. If an object is at rest, then there are no forces acting upon the object. 33. Which of the following statements are true of the concept of force? List all that apply. a. A force is a push or pull exerted upon an object which results from the interaction of that object with its environment. b. A sled slides down the hill and reaches the bottom where it gradually slows to a stop. Once on the level ground, the force of the hill persists upon the sled to allow it to continue its forward motion. c. An object can experience two or more forces and not accelerate. d. A contact force results from the physical contact between two objects. 34. Consider Newton's second law of motion to determine which of the following statements is true? a. If an object is moving to the right and slowing down, then the net force on the object is directed towards the left. b. The acceleration of an object is directly dependent upon its mass and inversely dependent upon its net force. c. An object has an acceleration of 8 m/s/s. If the net force acting upon the object is increased by a factor of 2, then the new acceleration would be 10 m/s/s. d. An object has an acceleration of 8 m/s/s. If the net force acting upon the object is increased by a factor of 3, then the new acceleration would be 11 m/s/s. 35. Big Bubba has a mass of 100 kg on the earth. What is Big Bubba's mass on the moon where the force of gravity is approximately 1/6-th that of Earth's? ________ 36. Little Billy weighs 360 N on Earth. What is Little Billie's mass on the moon where the force of gravity is approximately 1/6-th that of Earth's? ________ 37. The amount of net force required to keep a 5-kg object moving rightward with a constant velocity of 2 m/s is ____. a. 0 N b. 0.4 N c. 2 N d. 2.5 N e. 5 N 38. According to Newton's third law, every force is accompanied by an equal and opposite reaction force. The reason that these forces do not cancel each other is ____. a. the action force acts for a longer time period b. the two forces are not always in the same direction c. one of the two forces is greater than the other d. the two forces act upon different objects; only forces on the same object can balance each other. 39. As you sit in your chair and study your physics (presuming that you do), the force of gravity acts downward upon your body. The reaction force to the force of the Earth pulling you downward is ___. a. the force of the chair pushing you upward b. the force of the floor pushing your chair upward c. the force of the Earth pushing you upward d. the force of your body pulling the Earth upwards for items 40 - 45. Each one of Newton's Laws can play a role in any one particular situation. However, one of the laws is often most obviously dominant in governing the motion of a situation. Pick which of Newton's most governs the situations described below. a. First Law (inertia) b. Second Law (F = m a) c. Third Law (action-reaction) 40. A helicopter must have two sets of blades in order to fly with stability. 41. If you were in an elevator and the cable broke, jumping up just before the elevator hit the ground would not save you. Sorry. 42. You usually jerk a paper towel from a roll in order to tear it instead of pulling it smoothly. 43. A student desk changes the amount of force it puts on other objects throughout a school day. 44. Heavy objects are not easier to move around in a horizontal fashion on the Moon than on the Earth. 45. The stronger, heavier team in a tug-of-war does not create a larger tension in the rope than the weaker, lighter team. For 46-50 Determine the magnitude of the displacement (in meters) of an object which 46. moves from Hither to Yon (with an average speed of 28.0 m/s) and then back to Hither (with an average speed of 28.0 m/s) if both the forward and the return trip take 46 minutes each. 47. moves at a constant speed of 8.30 m/s in a straight line for 15.0 seconds. 48. decelerates at a rate of -4.35 m/s/s from a speed of 38.1 m/s to a speed of 17.6 m/s 49. accelerates from rest at a rate of 3.67 m/s2 for 12.1 seconds 50. is moving at 12.2 m/s and then accelerates at a rate of +1.88 m/s2for 17.0 seconds Prepared by: Checked by: JOJIMAR SJ. JULIAN JANICE J. ARALAR Physics Teacher Subject Group Head-3B Noted: LUCILLIE P. ANGELES Principal II  Republic of the Philippines Region IV-A CALABARZON Division of Rizal District of Cardona CARDONA SENIOR HIGH SCHOOL Cardona, Rizal “Aiming High, Soaring High in Making Difference” Table of Specification FIRST QUARTERLY EXAMINATIONS IN GENERAL PHYSICS 1 Learning Competencies Number of days Number of Placement items Physical Quantities 3. Measurement 4. Graphical Presentation 5. Linear 9 9 1-9 Fitting of Data Vectors 9 9 10-18 Kinematics: Motion Along a Straight Line 10 10 19-28 Kinematics: Motion in 2- Dimensions and 3- 10 11 29-39 Dimensions Newton’s Laws of Motion 10 11 40-50 and Applications Total 48 50 Prepared by: Checked by: JOJIMAR SJ. JULIAN JANICE J. ARALAR Science Teacher Subject Group Head Noted: LUCILLIE P. ANGELES Principal II