Circular motion

Front

What is the direction of the net force on a car going around a curve?

Back

The net force is directed toward the curve's center.

Front

In uniform circular motion, what is the direction of acceleration?

Back

The acceleration is directed toward the center of the circle.

Front

What is the direction of the net force when a rollercoaster is at the top of a loop?

Back

The net force is directed towards the ground.

Front

When moving in a horizontal circular path, what direction is the acceleration?

Back

The acceleration is directed towards the center of the circle.

Front

What is the relationship between the velocity of an object in circular motion and the radius of the circle?

Back

The velocity is always tangent to the circle.

Front

Define centripetal force.

Back

Centripetal force is the net force that acts on an object moving in a circular path, directed toward the center of the circle.

Front

What is the formula for centripetal acceleration?

Back

Centripetal acceleration (a_c) = v^2 / r, where v is the tangential speed and r is the radius of the circular path.

Front

What happens to the centripetal force if the speed of an object in circular motion increases?

Back

If the speed increases, the centripetal force must also increase to maintain circular motion.

Front

What is the effect of increasing the radius of a circular path on the centripetal acceleration?

Back

Increasing the radius decreases the centripetal acceleration for a constant speed.

Front

What is the difference between tangential velocity and angular velocity?

Back

Tangential velocity is the linear speed of an object moving along a circular path, while angular velocity is the rate of change of the angle with respect to time.