AP®PhysicsCollege BoardPhysics 1: Algebra-BasedExam QuestionsUnit 1: KinematicsVectors & Motion

Vectors & Motion (College Board AP® Physics 1: Algebra-Based)

Exam Questions

5 mins5 questions
1
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A stone is thrown horizontally from a bridge into a pond. At the same instant, another identical stone is dropped vertically into the pond. Both stones have the same initial height.

Which of the following statements is correct?

  • Both stones hit the water at exactly the same time.

  • The stone that is thrown horizontally hits the water before the stone that is vertically dropped.

  • The stone that is vertically dropped hits the water before the stone that was thrown horizontally.

  • There is not enough information to know which stone hits the water first.

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2
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A soccer ball is kicked at an angle of 45 degree to the ground. Which of the following statements is true about the motion of the soccer ball?

  • The vertical speed of the soccer ball increases on the way up and decreases on the way down

  • The acceleration vector points in the same direction as the velocity vector on the way down and in the opposite direction on the way up

  • The velocity of the soccer ball is zero at the top of the trajectory

  • The horizontal speed of the soccer ball is constant throughout the trajectory

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3
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A rock is kicked horizontally from the edge of a 150 space straight m high cliff and lands in the water below at a distance of 90 space straight m from the base of the cliff. Which of the following is the final horizontal velocity of the rock?

  • 15 space straight m divided by straight s

  • 16 space straight m divided by straight s

  • 21 space straight m divided by straight s

  • 35 space straight m divided by straight s

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41 mark

A duck takes off from rest at an angle of 67 degree from the water and accelerates in this direction at a constant rate of 12.5 space straight m divided by straight s squared until a resultant velocity of 25 space straight m divided by straight s is reached. Which of the following are correct for the horizontal and vertical displacements of the duck during its period of acceleration?

  • straight capital delta x space equals space 9.8 space space straight m

    straight capital delta y space equals space 23 space straight m

  • straight capital delta x space equals space 23 space space straight m

    straight capital delta y space equals space 9.8 space straight m

  • straight capital delta x space equals space 12.4 space space straight m

    straight capital delta y space equals space 23 space straight m

  • straight capital delta x space equals space 23 space space straight m

    straight capital delta y space equals space 12.4 space straight m

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5
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A projectile is launched with an initial velocity of magnitude M at an angle ϕ to the horizontal. Find the time of flight of the projectile.

  • fraction numerator space 2 M space sin space ϕ space over denominator g end fraction

  • fraction numerator space minus space M space sin space ϕ space over denominator g end fraction

  • t space equals space fraction numerator space space 2 M space sin space ϕ space over denominator negative g end fraction

  • M space sin space ϕ space minus space 2 g

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