Question 1

What kind of force is needed for circular motion?

Accepted Answer

Centripetal Force

Answer

Gravitational Force

Answer

Frictional Force

Answer

Nuclear Force

Question 2

What would happen to an object in circular motion if the constant force directing towards the center is suddenly removed?

Accepted Answer

It would move in a straight line

Answer

It would move backwards

Answer

It would stop

Answer

It would continue moving in a circle

Question 3

How does the direction of the velocity of an object moving in a circle change?

Accepted Answer

The direction of the velocity changes continuously

Answer

The direction of the velocity changes only once per full rotation

Answer

The direction of the velocity changes twice per full rotation

Answer

The direction of the velocity does not change

Question 4

Why doesn't an object in circular motion move in a straight line in the absence of an external force?

Accepted Answer

Because a constant force is directed towards the center of the circle

Answer

Because friction stops it from moving straight

Answer

Because it has a natural tendency to move in circles

Answer

Because gravity pulls it downwards

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