Module 3 test review forces and motion

When is something Weightless?

• When in free fall
• When in outer space
• When in a low gravity environment
• Never

Which of the following is not a type of friction

• Sliding
• Rolling
• Air resistance
• Tension

Sliding friction often opposes which of these forces

• Air resistance
• Gravity
• Applied force
• Normal force

Without centripetal force, an object would...

• Move at a constant velocity
• Continue spinning
• Stop moving
• Fall down

Two pieces of paper drop at the same time, one is crumped and the other is flat, which will hit the ground first?

• The crumpled paper
• The flat paper
• They both hit at the same time

What causes objects of different sizes, but similar masses to drop at different speeds?

• Air resistance
• Gravity
• Terminal velocity
• Momentum

Sliding occurs when...

• an object is being pushed across another surface
• when an object cannot be moved
• When an object rolls across a surface
• When an object is falling, and the air pushes against it.

Tags

NGSS.3-PS2-1

Static friction occurs when...

• an object is being pushed across another surface
• when an object cannot be moved
• When an object rolls across a surface
• When an object is falling, and the air pushes against it.

Rolling friction occurs when...

• an object is being pushed across another surface
• when an object cannot be moved
• When an object rolls across a surface
• When an object is falling, and the air pushes against it.

What friction allows a car to drive along a curved path?

• Rolling friction
• Static friction
• Sliding friction
• No friction