circular motion - Assessment

1.

Multiple Choice

45 sec

1 pt

What type of acceleration does an object moving with constant speed in a circular path experience?
A) free fall
B) constant acceleration
C) linear acceleration
D) centripetal acceleration

A

B

C

D

2.

Multiple Choice

30 sec

1 pt

Which of the following depicts the direction of the velocity of the blowing ball in a circular motion?

A

C

B

D

3.

Multiple Choice

30 sec

1 pt

The ball in the figure is in a uniform circular motion. Which of the following depicts the direction of the acceleration of the ball?

A

B

C

D

4.

Multiple Choice

30 sec

1 pt

An object which move in uniform circular motion must move with?

constant speed

constant direction

constant velocity

5.

Multiple Choice

30 sec

1 pt

When an object is in circular motion it is constantly changing its velocity.

True

False

6.

Multiple Choice

30 sec

1 pt

A car goes around a curve road. What is the direction of the net force on the car?

toward the curve's center

away from the curve`s center

toward the front of the car

toward the back of the car

7.

Multiple Choice

45 sec

1 pt

Where is the net force when the rollercoaster is at the top of the loop?

Towards the sky

Towards the Right

Towards the left

Towards the ground

8.

Multiple Choice

1 min

1 pt

A particle P is moving in a circle with uniform speed. Which one of the following diagrams correctly shows the direction of the acceleration a and velocity v of the particle at one instant of time?

A

B

C

D

9.

Multiple Choice

45 sec

1 pt

What is the direction of the acceleration at point B, if the ball is revolving clockwise?

up

right

down

left

10.

Multiple Choice

30 sec

1 pt

The time taken for one complete circuit is called the...

Period

Frequency

Angular velocity

11.

Multiple Choice

30 sec

1 pt

Angular velocity, ω defined as the rate of change of _________________

angular distance

uniform speed

angular displacement

12.

Multiple Choice

1 min

1 pt

A 10kg car travels at a constant speed of 20.0 m/s around a horizontal circular track. Which diagram correctly represent the direction of the car's velocity (v) and the direction of the centripetal force (Fc) acting on the car at a particular moment?

13.

Multiple Choice

30 sec

1 pt

What does RPM stand for?

Speed of a straight line

speed of a circle

Revolutions Per Minute

Rotations Per MInute

14.

Multiple Choice

1 min

1 pt

The mass at the end of a pendulum is made to move in a horizontal circle of radius r at constant speed. The magnitude of the net force on the mass is F.

What is the direction of F during half a revolution?

towards the centre of the circle

away from the centre of the circle

along a tangent to the circle

in a circle

15.

Multiple Choice

30 sec

1 pt

A bob tied at the end of a string is made to execute a circular motion in the horizontal plane. Which of the following force provides the centripetal force?

Weight of the bob

Tension in the string and the weight of the bob

Tension in the string

Tension in the string minus the weight of the bob

16.

Multiple Choice

20 sec

1 pt

What is the symbol for angular velocity?

θ

ψ

ω

Ω

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