TEST Circular Motion

Which represents the acceleration of the ball?

• A
• B
• C
• D

The _______________________ supplies the centripetal force requirement for the car to move in a horizontal circle. Without it, the car would turn its wheels but would not move in a circle (as is the case on an icy surface).

• friction force

• centrifugal force

• normal force

• applied force

Which of the following depict the speed of the blowing ball?

• A
• B
• C
• D

moving or tending to move toward a center...

• centripetal force

• centrifugal force

• Tangent

• Curvature

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

• Towards the sky

• Towards the Right

• Towards the left

• Towards the ground

This ball moves in a circle at a constant speed. Which of the following vectors depicts the ball's acceleration?

• A

• B

• C

• D

The orbital period is the amount of time an object takes to travel

• one orbital radius

• one orbital diameter

• half an orbital radius

• one orbital circumference

What happens to the centripetal force exerted on an object if you double the velocity?

• it increases to 2X

• it decreases to 2X

• it increases to 4X

• it increases to 6X

A satellite of mass m and speed v orbits the Earth at a distance r from the center of the Earth. The gravitational acceleration due to the Earth at the satellite is equal to.

• v/r

• v²/r

• mv/r

• mv²/r

What is creating the centripetal force on a satellite around the Earth?

• gravitational force

• centrifugal force

• friction force

• normal force