Uniform of Circular motion Quiz 1

A ball is spun around in circular motion such that it completes 50 rotations in 25 s. a. What is the period of its rotation?

• 2 s

• 7s

• 0.5 s

• 3 s

A pendulum completes one cycle in 15 s. a. What is the frequency?

• 0.0007 hz

• 0.07hz

• 7 hz

• 750bhz

A car moves around a circular track such that its period is 24 s.

a. What is the frequency of its rotation?

b. How much time will be required to complete 36 rotations?

• a. 0.04 hz b. 864s

• a. 4 hz b. 1.5 s

• a. 0.4 hz b. 86 s

• a. 40 hz b. 0.864 s

Tags

NGSS.HS-PS4-1

An object is spun around in a circle of radius 1.0 m with a period of 4.0 s. What is the magnitude of the velocity?

• 0.64 m/s

• 1.6 m/s

• 2 m/s

• 25.12 m/s

It takes 560 s for a runner to complete one circular lap, moving at a speed of 6.00 m/s. What is the radius of the track?

• 435 m

• 243 m

• 535 m

• 500 m

What is the purpose of centripetal force?

• To explain how objects have radius and velocity

• To explain how an object moves in a circular pattern or motion

• To explain how velocity is tangent to a circular pattern

• To explain how the direction matters when moving in a circular patter

Dynamics is the idea of...

• how fast something seems to move

• motion and speed working together

• motion and force working together

• how force is created

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-3

An object is spun around in a circle of radius 2.0 m with a period of 10.0s. What is its velocity?

• 1.3 m/s

• 2 m/s

• 3 m/s

• 5 m/s

What is the net force acting on a 5.0 kg object that has a velocity of 15 m/s and is moving in a circle of radius 1.5 m?

• 452 N

• 750

• 750 N

• 452

Tags

NGSS.HS-PS2-1

A 40.0 kg object is experiencing a net force of 240 N while traveling in a circle of radius 0.8 m. What is its velocity?

• 54 m/s

• 2.2 m/s

• 3 m/s

• 22 m/s

Tags

NGSS.HS-PS2-1