# Physics Study Set 2

Physics & Astronomy

## Quiz 10 :

Rotational Kinematics and Energy

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Q01

A car is moving in a circular path. At a certain instant, it has zero tangential acceleration and a non-zero centripetal acceleration. What is the car doing at that instant?

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Essay

It is moving with a non-zero velocity and zero instantaneous angular acceleration.

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Q02

A car is traveling along a highway at 65 mph. Which point in the tires is moving forward at 65 mph?

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Short Answer

the center of the tire

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Q03

A car is traveling along a highway at 65 mph. What is the linear speed of the top of the tires?
What is the linear speed at the bottom of the tires?

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Short Answer

130 mph; 0 mph

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Q04

A hollow cylinder and a solid cylinder are constructed so they have the same mass and radius. Which cylinder has the larger moment of inertia?

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Short Answer

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Q05

The preferred positive direction for angular displacement is the clockwise direction.

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True False

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Q06

When a rigid body rotates about a fixed axis all the points in the body have the same angular displacement.

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True False

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Q07

When a rigid body rotates about a fixed axis all the points in the body have the same linear displacement.

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True False

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Q08

When a rigid body rotates about a fixed axis all the points in the body have the same angular speed.

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True False

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Q09

When a rigid body rotates about a fixed axis all the points in the body have the same tangential speed.

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True False

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Q10

When a rigid body rotates about a fixed axis all the points in the body have the same angular acceleration.

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True False

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Q11

When a rigid body rotates about a fixed axis all the points in the body have the same tangential acceleration.

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True False

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Q12

When a rigid body rotates about a fixed axis all the points in the body have the same centripetal acceleration.

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True False

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Q13

Mass can be considered concentrated at the center of mass for rotational motion.

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True False

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Q14

Rolling without slipping depends on static friction between the rolling object and the ground.

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True False

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Q15

Two children are riding on a merry-go-round. Child A is at a greater distance from the axis of rotation than child B. Which child has the larger angular displacement?

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Multiple Choice

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Q16

Two children are riding on a merry-go-round. Child A is at a greater distance from the axis of rotation than child B. Which child has the larger linear displacement?

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Multiple Choice

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Q17

Two children are riding on a merry-go-round. Child A is at a greater distance from the axis of rotation than child B. Which child has the larger angular speed?

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Multiple Choice

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Q18

Two children are riding on a merry-go-round. Child A is at a greater distance from the axis of rotation than child B. Which child has the larger tangential speed?

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Multiple Choice

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Q19

Two children are riding on a merry-go-round. Child A is at a greater distance from the axis of rotation than child B. Which child has the larger centripetal acceleration?

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Multiple Choice

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Q20

Two children are riding on a merry-go-round. Child A is at a greater distance from the axis of rotation than child B. Which child has the larger tangential acceleration?

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Multiple Choice