AP (Advanced Placement) Physics(B-C): Questions 117 - 119 of 921

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Question number: 117

» Torque and Equilibrium

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Question

A box of mass is placed on an inclined ramp of angled with horizontal. What is the friction force of the ramp on the box in Newton?

Choices

Choice (5)Response

a.

b.

c.

d.

e.

All of the above

Question number: 118

» Gravitation and Circular Motion

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Question

A ball of a mass of is attached to a string and whirled in a vertical circle of radius . At the exact top of the path, the speed of the ball is . Calculate the tension in the string at this point.

Choices

Choice (5)Response

a.

b.

c.

d.

e.

Question does not provide sufficient data or is vague

Question number: 119

» Force and Newton's Law of Motion

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Question

When a falling parachutist reaches terminal velocity, he is no longer accelerating. Which of the following statements is true about the parachutist?

Choices

Choice (5)Response

a.

The gravitational force on the parachutist is equal to the friction force of the air on the parachutist.

b.

The friction force of the air on the parachutist has become greater than the gravitational force on the parachutist, so the parachutist no longer accelerates.

c.

The friction force of the air on the parachutist has reached a point where it no longer has an effect, so the parachutist falls at constant speed.

d.

The gravitational force on the parachutist is still greater than the friction force of the air, so that the parachutist continues to fall.

e.

All of the above

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