Physics: Force, Motion, and Collisions
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Questions and Answers

What will happen to the balls made of plastic and wood upon impact?

  • Both balls will change direction. (correct)
  • The wood ball will change direction.
  • Both balls will stop.
  • The plastic ball will change direction.
  • When two billiard balls collide with the same amount of force, what type of collision occurs?

  • Inelastic
  • Elastic (correct)
  • Perfectly elastic
  • Perfectly inelastic
  • Which of the following does NOT describe an object influenced by balanced forces?

  • The object is constantly accelerating. (correct)
  • The object has the same speed.
  • The object is not moving.
  • All of the above.
  • What does a projectile in motion indicate?

    <p>It follows a parabolic trajectory.</p> Signup and view all the answers

    What characteristic does Quadrant III of the Cartesian coordinate system provide?

    <p>Negative x and negative y values.</p> Signup and view all the answers

    In projectile motion, when is the displacement (x) at its maximum value?

    <p>At an angle of 45°.</p> Signup and view all the answers

    What is the force acting against weight most commonly called?

    <p>frictional</p> Signup and view all the answers

    What is the z-component value of a ball flying at a velocity of 2.5 m/s with angles θ = 60° and φ = 30°?

    <p>2.18 m/s</p> Signup and view all the answers

    How does the angle of an object's initial velocity relate to the range?

    <p>It is associated with maximum height.</p> Signup and view all the answers

    Where is the center of mass of a plate located when spinning on a stick?

    <p>At the plate’s origin</p> Signup and view all the answers

    What type of energy is associated with a moving object?

    <p>kinetic</p> Signup and view all the answers

    What is 18 mm in inches, rounded to the nearest hundredths?

    <p>0.71 inches</p> Signup and view all the answers

    Which statement about scientific notation is correct?

    <p>The exponent is negative if the decimal point moves to the left.</p> Signup and view all the answers

    What is the result when converting 185 yards per minute to miles per hour?

    <p>6.31 mi/h</p> Signup and view all the answers

    Which unit does NOT belong to the group: Time, Area, Length, Luminous Intensity?

    <p>Luminous Intensity</p> Signup and view all the answers

    When can work be achieved?

    <p>When the force being applied to the object is perpendicular to the object’s motion</p> Signup and view all the answers

    Which part of the statement about impact velocity is incorrect?

    <p>The statement is correct</p> Signup and view all the answers

    In the Cartesian plane, which quadrant has x < 0 and y > 0?

    <p>Quadrant II</p> Signup and view all the answers

    What is incorrect about the relationship between random errors and precision?

    <p>The statement is correct</p> Signup and view all the answers

    Which formula best represents the Impulse-Momentum Theorem?

    <p>F∆t = m∆v</p> Signup and view all the answers

    How many times does an average human heart beat in a lifetime if it beats 60 times per minute and the average lifespan is 90 years?

    <p>2.77 billion beats</p> Signup and view all the answers

    Why is it important to determine unit vector values of vectors?

    <p>Because the magnitude is always one (1).</p> Signup and view all the answers

    Which incorrect assumption can be made about random errors in measurements?

    <p>High random errors imply greater accuracy.</p> Signup and view all the answers

    Which option best defines a collision?

    <p>Collision is a brief, simultaneous interaction between two or more bodies.</p> Signup and view all the answers

    What happens when an object reaches its maximum height when thrown upwards?

    <p>When the final velocity reaches zero.</p> Signup and view all the answers

    Which type of collision involves a sticky interaction?

    <p>Perfectly inelastic collision</p> Signup and view all the answers

    Which of the following statements about momentum is INCORRECT?

    <p>Momentum is defined by the amount of mass within a focused area in an object.</p> Signup and view all the answers

    What kind of graph is best suited for representing the results of velocity and acceleration tests?

    <p>Line graph</p> Signup and view all the answers

    When are the x and y coordinates considered in Quadrant IV of the Cartesian coordinate system?

    <p>x &gt; 0, y &lt; 0</p> Signup and view all the answers

    What is the influence that makes a body move called?

    <p>Force</p> Signup and view all the answers

    Which of the following statements about energy is INCORRECT?

    <p>Energy is only kinetic and does not include potential energy.</p> Signup and view all the answers

    Which of the following statements is NOT true regarding scientific notations?

    <p>The base is always 11.</p> Signup and view all the answers

    Which option correctly fills in the blank: X : Y : Z as to abscissa : ordinate : __________?

    <p>applicate</p> Signup and view all the answers

    Which of the following is NOT considered a key term in understanding precision?

    <p>research</p> Signup and view all the answers

    Which of the following terms refers to miscalculations or judgment errors during an experiment?

    <p>error</p> Signup and view all the answers

    What is the correct speed of the Titanic in m/s?

    <p>15,384.3 m/s</p> Signup and view all the answers

    What are the computed momenta of the ship and the iceberg?

    <p>498,622,068.8 kg.m/s; 0 kg.m/s</p> Signup and view all the answers

    What is the velocity of the ship if the iceberg stopped and crumbled after the collision?

    <p>15,384.3 m/s</p> Signup and view all the answers

    What force does the Titanic exert to travel 650 km in 45 seconds?

    <p>24,000 N</p> Signup and view all the answers

    Study Notes

    Newton's Second Law

    • A plastic ball and a wood ball collide, both will change direction.

    Projectile Motion

    • In a projectile motion, the angle of an object’s initial velocity with respect to the range is called the angle of elevation.
    • Projectile motion reaches maximum displacement (x) when θ = 45°.

    Collisions

    • An elastic collision happens when two billiard balls collide with the same amount of force.
    • Perfectly elastic collision occurs when both balls move with the same velocity after collision.
    • Inelastic collision happens when two objects collide and stick together.
    • Perfectly inelastic collision occurs when two objects collide and completely lose their kinetic energy after collision.

    Force and Motion

    • A moving object is impacted by balanced forces if it is constantly accelerating, has the same speed, or is not moving.
    • The force acting against weight is called a normal force.
    • Friction is a force that opposes motion.
    • Applied force is a force that is applied to an object.

    Energy

    • Kinetic energy is the energy of a moving object.
    • Potential energy is the energy of an object at rest.

    Units and Conversions

    • 18 mm is equal to 0.71 inches.
    • 185 yd per minute is equal to 6.31 mi/h.
    • 186,000 mi/h is equal to 2.82 billion km/yr.

    Scientific Notation

    • In scientific notation, the exponent is positive if the decimal point moves to the left.

    The Titanic

    • The Titanic, a steam-powered cruise ship, was travelling at 14,444.44 m/s to travel a distance of 650 kilometers in 45 seconds.
    • The iceberg had a mass of 4,500 kg, and it was travelling at 175 m/s.

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    Description

    This quiz covers key concepts in physics related to force, motion, and collisions. Topics include Newton's Second Law, projectile motion, and the types of collisions such as elastic and inelastic. Test your understanding of how these principles apply to real-world scenarios.

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