LaGuardia High School Regents Physics Practice Worksheet - Final Exam Review Fall Semester PDF

LaGuardia High School Regents Physics Name REVIEW for Final Exam – Fall Semester Date To receive full credit for short response questions, you must show all work, which includes showing equation, substitution of values and units....

LaGuardia High School Regents Physics Name REVIEW for Final Exam – Fall Semester Date To receive full credit for short response questions, you must show all work, which includes showing equation, substitution of values and units. 8. 9. 10. 11. 6. 12. 7. 13.  14. 19. 20. 15. 21. 16. 22. 17. 23. 18. 24.  25. 28. 26. 29. 27. 30. Short Response 1. 2. 3. 4. 5. Calculate the magnitude of the net force acting on the box. [Show all work, including the equation and substitution with units.] 6. Determine the magnitude of the force of friction on the box. True/False Concept Review 1. Which of the following statements about vectors and scalars 4. Which of the following statements about acceleration are TRUE? are TRUE? List all that apply. List all that apply. a) A vector is a large quantity and a scalar is a small quantity. a) Acceleration is a vector quantity. b) A scalar quantity has a magnitude and a vector quantity b) Accelerating objects MUST be changing their speed. does not. c) Accelerating objects MUST be changing their velocity. c) A vector quantity is described with a direction and a scalar is d) Acceleration units include the following; m/s2, mi/hr/sec, cm/s2, not. km/hr/m. e) The direction of the acceleration vector is dependent upon two d) Scalar quantities are path dependent quantities and vector factors: the direction the object is moving and whether the quantities are not. object is speeding up or slowing down. e) A scalar quantity depends only upon the initial and final f) An object which is slowing down has an acceleration. values of the quantity; this is not the case for vector g) An object which is moving at constant speed in a circle has an quantities. acceleration. f) The quantity 20 m/s, north is a speed and as such is a scalar h) Acceleration is the rate at which the velocity changes. quantity. i) An object that is accelerating is moving fast. g) The quantity 9.8 m/s/s is an acceleration value and as such j) An object that is accelerating will eventually (if given enough is a vector quantity. time) be moving fast. k) An object that is moving rightward and speeding up has a 2. Which of the following statements about distance and/or rightward acceleration. displacement are TRUE? List all that apply. l) An object that is moving upwards and slowing down has an upwards acceleration. a) Distance is a vector quantity and displacement is a scalar quantity. 5. Which of the following statements are true of inertia? List all that apply. 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. a) Inertia is a force. c) A person starts at position A and finishes at position B. The b) Inertia is a force which keeps stationary objects at rest and distance for the trip is the length of the segment measured moving objects in motion at constant velocity. c) Inertia is a force which brings all objects to a rest position. from A to B. d) All objects have inertia. d) If a person walks in a straight line and never changes e) A more massive object has more inertia than a less massive direction, then the distance and the displacement will have object. exactly the same magnitude. f) Fast-moving objects have more inertia than slow-moving e) The phrase "20 mi, northwest" likely describes the distance objects. for a motion. g) An object would not have any inertia in a gravity-free f) The phrase "20 m, west" likely describes the displacement environment (if there is such a place). for a motion. h) Inertia is the tendency of all objects to resist motion and ultimately stop. 3. Which of the following statements about velocity and/or speed i) In a gravity-free environment (should there be one), a person are TRUE? List all that apply. with a lot of inertia would have the same ability to make a turn as a person with a small amount of inertia. a) Velocity is a vector quantity and speed is a scalar quantity. b) Both speed and velocity refer to how fast an object is 6. Which of the following statements are true of the quantity mass? moving. List all that apply. c) Person X moves from location A to location B in 5 seconds. Person Y moves between the same two locations in 10 a) The mass of an object is dependent upon the value of the seconds. Person Y is moving with twice the speed as person acceleration of gravity. X. b) The standard metric unit of mass is the kilogram. d) The velocity of an object refers to the rate at which the c) Mass depends on how much stuff is present in an object. d) The mass of an object is variable and dependent upon its object's position changes. location. e) For any given motion, it is possible that an object could e) An object would have more mass on Mount Everest than the move very fast yet have an abnormally small velocity. same object in the middle of Lake Michigan. f) The phrase "30 mi/hr, west" likely refers to a scalar quantity. f) If all other variables are equal, then an object with a greater g) The average velocity of an object on a round-trip journey mass would have a more difficult time accelerating. would be 0. g) If all other variables are equal, then it would require less h) The direction of the velocity vector is dependent upon two exerted force to stop a less massive object than to stop a more factors: the direction the object is moving and whether the massive object. object is speeding up or slowing down. h) The mass of an object is mathematically related to the weight of the object. 7. Which of the following statements are true of the 7. Which of the following statements are true of the quantity weight? 10. Which of the following statements are true of an List all that apply. object moving in a circle at a constant speed? Include all that apply. a) The weight of an object is dependent upon the value of the acceleration of gravity. b) Weight refers to a force experienced by an object. a) The object experiences a force which has a c) The weight of an object would be less on the Moon than on the component directed parallel to the direction of Earth. motion. d) A person could reduce their weight significantly by taking an airplane ride to the top of Mount Everest. b) Inertia causes objects to move in a circle. e) Two objects of the same mass can weigh differently. c) There can be a force pushing outwards on the f) To gain weight, one must put on more mass. object as long as the net force in inwards. g) The weight of an object can be measured in kilograms. d) Because the speed is constant, the acceleration is h) The weight of an object is equal to the force of gravity acting zero. upon the object. e) The acceleration and the net force vector are 8. Which of the following statements are true of an object that directed perpendicular to each other. experiences balanced forces (or unbalanced forces)? List all that f) If the net force acting upon the object is suddenly apply. reduced to zero, then the object would suddenly depart from its circular path and travel tangent to a) If a person is moving to the right, then the forces acting upon it the circle. are NOT balanced. g) The acceleration of the object is directed tangent to b) A balance of forces is demonstrated by an object which is slowing to a stop. the circle. c) It would take an unbalanced force to keep an object in motion. d) If an object is moving with a constant speed in a circle, then the forces acting upon the object are balanced. 11. Which of the following statements are true about e) If an object is accelerating at a constant rate of acceleration, then the forces acting upon the object are balanced. gravitational force? Identify all that apply. f) It is NOT possible for just three forces to be acting upon an object and they still balance each other. a) The gravitational force only acts between very, very g) A free-falling object experiences a balance of forces. massive objects. h) Balanced forces cause stationary objects to remain at rest and moving objects to come to rest. b) The gravitational force between an object and the i) Unbalanced forces cause objects to move. earth is inversely related to the distance between the object's and the earth's center. 9. Which of the following statements are true of the concept c) The gravitational force can ALWAYS be accurately of force? List all that apply. calculated by multiplying the object mass by the acceleration of gravity (m g). a) A force is a push or pull exerted upon an object which results d) The gravitational force acting upon an object is the from the interaction of that object with its environment. b) Bubba approaches Billie and gives him a swift shove. Timid little same as the weight of the object. Billie keeps his hands in his pocket during this interaction. e) The gravitational force between two objects is Subsequently, while Bubba places a force upon Billie, Billie does independent of the mass of the smaller of the two not place a force upon Bubba. objects. c) A quarterback throws a football down field. Once thrown, the force from the quarterback persists upon the ball to cause it to f) If object A gravitationally attracts object B with a continue on its upward trajectory towards its peak. force of X Newtons, then object B will also d) A sled slides down the hill and reaches the bottom where it gravitationally attract object A with the same force gradually slows to a stop. Once on the level ground, the force of of X Newtons. the hill persists upon the sled to allow it to continue its forward g) The doubling of the separation distance (measured motion. e) Forces always cause objects to move. from the center) between two objects will halve the f) An object can experience two or more forces and not gravitational force between the objects. accelerate. h) It an object is placed two earth-radii above the g) A contact force results from the physical contact between two surface of the earth, then the force of gravitational objects. h) A field force results from the action of two objects which are attraction between the object and the earth will be positioned some distance away. one-fourth the magnitude as on earth's surface. i) A force is a vector quantity; there is always a direction i) Orbiting astronauts do not experience a force of associated with it. gravity; this explains why they feel weightless. j) Force can be measured in kilograms or Newtons depending upon the system of measurement (metric or otherwise).