Circular Motion 2023 Test

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

• A
• B
• C
• D

Centripetal acceleration acts towards the ___________ of the circular motion

• center
• circumference
• outside
• radius

Which represents the acceleration of the ball?

• A
• B
• C
• D

What is the force that causes centripetal acceleration when a car goes around a curve?

• Friction
• Gravity 
• Normal
• Tension

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

• outwards
• towards the center
• tangent
• faster

• 1
• 2
• 3
• 4

What is the direction of the net force on an upsidedown roller coaster at the top of the loop?

• Up, toward the sky.

• To the right.

• To the left.

• Down, toward the ground.

Answer explanation

The net force is a combination of gravity and the normal force from the track, both of which are downward in this position.

An object with uniform circular motion, has constant _?_ but constantly changing _?_.

• speed, acceleration

• speed, direction

• acceleration, speed

• acceleration, velocity

Answer explanation

The "uniform" refers to the unchanging speed.

Any force or acceleration described as "centripetal" will always point _?_.

• in the direction the object is moving

• tangential to the circle

• towards the center of the circle around which an object is moving

• towards the outer edge of the circle around which an object is moving

Answer explanation

The word centripetal means "toward the center" or "center-seeking."

The unit used to label measurements of centripetal force (or any force!) is the _?_.

• J

• m/s²

• kg⋅m/s

• N