Circular Motion Review

Front

What is the direction of velocity in circular motion?

Back

The velocity is always tangent to the line of a circle.

Front

What is the direction of centripetal force when an object moves in a circular path?

Back

The centripetal force is directed toward the center of the circular curve.

Front

What does it mean for Earth and the Moon to rotate on an axis?

Back

It means that they spin around an imaginary line that passes through their centers.

Front

How do you calculate centripetal acceleration?

Back

Centripetal acceleration can be calculated using the formula a_c = v^2 / r, where v is the tangential speed and r is the radius of the circular path.

Front

What is the formula for centripetal force?

Back

Centripetal force can be calculated using the formula F_c = m * a_c, where m is the mass of the object and a_c is the centripetal acceleration.

Front

If a dog is 1.5 m from the center of a merry-go-round and has a tangential speed of 1.5 m/s, what is its centripetal acceleration?

Back

The dog's centripetal acceleration is 1.5 m/s^2.

Front

What is the relationship between tangential speed and centripetal acceleration?

Back

Centripetal acceleration increases with the square of the tangential speed.

Front

How does mass affect centripetal force?

Back

Centripetal force is directly proportional to the mass of the object; as mass increases, centripetal force increases.

Front

What happens to centripetal force if the radius of the circular path increases while keeping mass constant?

Back

If the radius increases, the centripetal force decreases for a constant tangential speed.

Front

What is the unit of measurement for centripetal force?

Back

The unit of measurement for centripetal force is Newtons (N).