Circular Motion Review - 4A

Front

What do the red arrows represent in a circular motion diagram?

Back

The velocity vector.

Front

Where does centripetal acceleration always point?

Back

Towards the center of the circle.

Front

The velocity in circular motion is always _____ to the line of a circle.

Back

Tangent.

Front

Why does an object in uniform circular motion have acceleration?

Back

Because it is changing direction.

Front

What is the direction of centripetal force in circular motion?

Back

Towards the center of the circle.

Front

Define centripetal acceleration.

Back

Acceleration that acts on an object moving in a circular path, directed towards the center of the circle.

Front

What is the formula for centripetal acceleration?

Back

a_c = v^2 / r, where v is the linear velocity and r is the radius.

Front

What happens to the centripetal force if the speed of the object increases?

Back

The centripetal force must increase to maintain circular motion.

Front

What is the relationship between velocity and radius in circular motion?

Back

For a constant speed, as the radius increases, the velocity decreases.

Front

What is the effect of mass on centripetal force?

Back

Centripetal force increases with mass for a given acceleration.