AP Physics Unit 5

An object changes its velocity from V₁ to V₂ during a time interval Δt. Which of the following is the correct direction for the object’s acceleration?

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NGSS.HS-PS2-1

Which of the following pairs of graphs shows the distance traveled versus time and the speed versus time for an object uniformly accelerated from rest?

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A ball is thrown and follows the parabolic path shown above. Air friction is negligible. Point Q is the highest point on the path. Points P and R are the same height above the ground. Which of the following diagrams best shows the direction of the acceleration of the ball at point P?

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Tags

NGSS.HS-PS2-1

A ball is thrown and follows the parabolic path shown above. Air friction is negligible. Point Q is the highest point on the path. Points P and R are the same height above the ground. Which of the following best indicates the direction of the velocity, if any, on the ball at point Q?

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• v = 0 m/s at point Q

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NGSS.HS-PS2-1

At time t = 0, car X traveling with speed v₀ passes car Y. which is just starting to move. Both cars then travel on two parallel lanes of the same straight road. The graphs of speed v versus time t for both cars are shown above. Which of the following is true at time t = 20 seconds? Select two answers.

• car Y is behind car X

• car Y is passing car X

• car Y is in front of car X

• both cars have the same velocity

As a rocket moves away from the Earth's surface, the rocket's weight (i.e., F_{Earth on rocket})

• increases.

• decreases.

• remains the same.

• depends on how fast it is moving.

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NGSS.HS-PS2-4

A satellite of mass m moves in a circular orbit of radius R around a planet of mass M with speed v. Which of these must be true for the satellite? Choose two answers.

• The net force on it is MR/v²

• Its acceleration is GM/R

• Its orbital velocity is (GM/R)^1/2

• Its orbital period is 2R/v

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NGSS.HS-ESS1-4

NGSS.HS-PS2-1

NGSS.HS-PS2-4

A ball of mass m is suspended from two strings of unequal length as shown below. The tensions T₁ and T₂ in the strings must satisfy which of the following relations?

• T₁ = T₂

• T₁ > T₂

• T₁ < T₂

• T₁ + T₂ = mg

Tags

NGSS.HS-PS2-1

A 2.0 kg block slides down a θ = 30.0⁰ incline as shown above with an acceleration of 2.0 m/s². Which of the following diagrams best represents the gravitational force W, the friction force f, and the normal force N that act on the block?

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NGSS.HS-PS2-1

NGSS.HS-PS2-4

A 2.0 kg block slides down a θ = 30.0⁰ incline as shown above with an acceleration of 2.0 m/s². The magnitude of the friction force along the plane is most nearly:

• 2.5 N

• 5 N

• 6 N

• 10 N

Tags

NGSS.HS-PS2-1