Pretest: Circular Motion

You swing a bucket of water attached to a string in a circle above your head. What keeps the water in the bucket?

• Friction
• Centripetal Force
• Gravity
• Inertia

Tags

NGSS.HS-PS2-1

Where is the net force when the rollercoaster is at the top of the loop?

• Towards the sky
• Towards the Right
• Towards the left
• Towards the ground

Tags

NGSS.HS-PS2-1

What does RPM stand for?

• Speed of a straight line
• speed of a circle
• Revolutions Per Minute
• Rotations Per MInute

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

• outwards
• towards the center
• tangent
• faster

Assuming Andromeda rotates at a uniform rate, which stars are moving the fastest?

• Stars closest to center
• Stars furthest from the center
• Stars with the hottest temperature
• Stars with the coldest temperature

Tags

NGSS.HS-ESS1-4

What is the radius of this circle?

• 18
• 10
• 9
• 8

Tags

CCSS.7.G.B.4

Determine the radius of the penny

• 59.66 mm
• 9.5 mm
• 38 mm
• 119.32 mm

Tags

CCSS.7.G.B.4

Find the circumference of the circle.

• 31.4 cm

• 78.5 cm

• 314 cm

• 15.7 cm

Tags

CCSS.7.G.B.4

A 0.30 m vinyl record revolves on a turntable that "turns" a record around and around at 33 RPM (revolutions per minute). What is the period of the record player?

Period is the time it takes for 1 revolution.

• 0.55 s

• 1.8 s

• 110 s

• .009 s

After closing a deal with a client, Kent leans back in his swivel chair and spins around with a frequency of 0.5 Hertz (or 0.5 revolution per second). What is Kent’s period of spin?

Period is the time it takes for 1 revolution

• 30 s

• 120 s

• 0.5 s

• 2 s