Exploring Centripetal Forces and Gravity

Calculate the centripetal acceleration of an object moving in a circle of radius 5 m at a speed of 10 m/s.

• 2 m/s²

• 10 m/s²

• 20 m/s²

• 50 m/s²

Which of the following can act as a centripetal force?

• Gravitational force

• Frictional force

• Tension in a string

• All of the above

What factor does not affect the magnitude of centripetal force?

• Mass of the object

• Speed of the object

• Radius of the circle

• Color of the object

A car is moving in a circular track of radius 100 m at a speed of 20 m/s. Calculate the centripetal acceleration.

• 2 m/s²

• 4 m/s²

• 6 m/s²

• 8 m/s²

Which of the following is an example of centripetal force in action?

• A car turning around a curve

• A ball thrown straight up

• A book sliding off a table

• A person standing still

What is the role of tension in a string when a ball is whirled in a circular path?

• Acts as a gravitational force

• Acts as a centripetal force

• Acts as a frictional force

• Acts as a normal force

Which of the following is a factor that affects centripetal force?

• Mass of the object

• Speed of the object

• Radius of the circle

• All of the above

Why do objects experience centripetal acceleration even though they can have a constant speed?

• Because they are speeding up as they move in a circle

• Because they are constantly changing direction and hence, velocity changes, and that net change is directed inward.

• Because they are constantly changing both speed and direction

• Because when you have 100 people pedaling, you can speed up more easily.

Tags

NGSS.HS-PS2-1

Which represents the acceleration of the ball?

• A
• B
• C
• D

Tags

NGSS.HS-PS2-1

A ball is moving at constant speed around the circle. Which letter represents the acceleration of the ball?

• A

• B

• C

• D

• Nonsense. The ball can't be accelerating while moving at a constant speed.

Tags

NGSS.HS-PS2-1