Force and Motion Review

What is air resistance?

• friction in the air that slows things down
• when an airplane flies into a cloud
• when you feel the air hitting your face

Tags

NGSS.MS-PS2-2

Why do we need friction?

• It helps objects go faster. 
• It helps objects go up higher.
• It helps make objects go slower or stop.

What does a curved line on a distance-time graph show?

• That the speed is changing. 
• That the object is not moving. 
• That the object is constant. 

Tags

NGSS.MS-PS3-1

What are EQUAL forces acting on an object in opposite directions that do not change the object's motion?

• Friction
• Weight
• Balanced Forces
• Unbalanced Forces

The force that two surfaces exert on each other when they rub against each other.

• Friction
• Gravity
• Weight
• Force

What are UNEQUAL forces acting on an object in opposite directions that cause motion?

• Balanced Forces
• Unbalanced Forces
• Gravity

Tags

NGSS.MS-PS2-2

What does this graph represent?

• Constant speed
• Acceleration
• Not moving

Tags

CCSS.8.EE.B.5

What is speed?

• how far you go
• how much distance is covered over a period of time
• how fast you accelerate
• the change in the location of a object

What is the formula to calculate speed?

• S = t/d
• S = d/t
• S = d x t
• S = t x d

What is this graph showing?

• Constant Speed
• Acceleration (speeding up)
• Deceleration (slowing down)
• No motion