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AP®PhysicsCollege BoardPhysics 1: Algebra-BasedExam QuestionsUnit 3: Work, Energy & PowerTranslational Kinetic Energy & Potential Energy

Translational Kinetic Energy & Potential Energy (College Board AP® Physics 1: Algebra-Based)

Exam Questions

5 mins5 questions
1
Sme Calculator1 mark

A baseball is thrown vertically into the sky by a player during a warm up exercise. The ball has an initial velocity, v, and an initial translational kinetic energy, K. Which of the following expressions is correct for the ball when it is halfway through its descent back to the player's hands?

  • v over 4

    fraction numerator K over denominator square root of 2 end fraction

  • v over 4

    K over 2

  • fraction numerator v over denominator square root of 2 end fraction

    K over 2

  • fraction numerator v over denominator square root of 4 end fraction

    fraction numerator K over denominator square root of 2 end fraction

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2
Sme Calculator1 mark

A satellite of mass 1.6 cross times 10 to the power of 5 space kg is launched from the surface of the Earth to an altitude of 4.3 cross times 10 to the power of 6 space straight m. Given that the Earth has a mass of 5.98 cross times 10 to the power of 24 space kg and a radius of 6.37 cross times 10 to the power of 6 space straight m, which of the following is correct for the change in the gravitational potential energy of the satellite?

  • 4.06 cross times 10 to the power of 12 space straight J

  • 6.04 cross times 10 to the power of 12 space straight J

  • 4.06 cross times 10 to the power of 13 space straight J

  • 6.04 cross times 10 to the power of 13 space straight J

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31 mark

An object falls from rest from a height h close to the surface of the Moon. The Moon has no atmosphere. Which of the following energy bar charts is correct for the gravitational potential energy, U subscript g, and kinetic energy, K, for the motion of the object one quarter of the way through its fall?

  • Graph with horizontal axis at zero, labeled "0," and vertical bars under "Ug" and "K" reaching the same level. The y-axis has upward-pointing arrow.
  • Bar chart showing two vertical bars labeled Ug and K on the y-axis, with K being three times taller than Ug.
  • Bar chart showing two bars labeled Ug and K, with Ug being 3 times taller than K.
  • Bar graph showing Ug and K. Ug is 4 lines tall and K is zero.

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41 mark

A particle is thrown vertically upwards to a height h with a speed v. It travels up to the highest point above the ground at point X, and it falls back down through point Y at 3 over 5 h above the ground.

screenshot-2023-08-21-121416

Which of the following values is the correct speed of the particle at point Y?

  • square root of fraction numerator 2 g h over denominator 5 end fraction end root

  • 2 square root of fraction numerator g h over denominator 5 end fraction end root

  • 4 square root of fraction numerator g h over denominator 5 end fraction end root

  • square root of fraction numerator 3 g h over denominator 5 end fraction end root

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5
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A box of mass m is pushed up an inclined slope with an applied force F. Which of the following energy bar charts is correct for the gravitational potential energy, U subscript g, kinetic energy, K, and elastic potential energy, U subscript s , of the object whilst it is in motion if the system is defined as only the box?

  • Graph with labeled regions Ug, K, and Us on the horizontal axis. Vertical axis starts at 0. K is 4 lines tall, Ug and Us are zero.
  • Bar graph with three bars labeled Ug, K, and Us. Ug is zero, K is 3 lines tall, and Us is 1 line tall.
  • Bar graph showing values for Ug, K, and Us on the vertical axis against a horizontal axis with intervals. Ug is 2.5 lines tall, K is 1.5 lines tall, Us is zero.
  • Graph showing energy levels with shaded bars. Ug is 2 lines tall, K is zero, Us is 2 lines tall.

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