11.1 & 11.2 Force and Motion

Why is it harder for the boy in Image B to get down the hill?

• motion

• friction

• work

• displacement

Why does a ball falls to the ground?

• Earth's force of gravity is GREATER than the ball's, so the ball gets attracted to the ground.

• Earth's force of gravity is LESS than the ball's, so the ball gets attracted to the ground.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

What is the net force?

• 30 N

• 25 N

• 5 N

• 55 N

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

When forces are _________ the object DOES NOT move.

• balanced

• unbalanced

• heavy

• light

Tags

NGSS.3-PS2-1

The force that opposes the motion of two surfaces sliding past each other is called ___________.

• acceleration

• inertia

• unbalanced

• friction

What two measurements are necessary for calculating speed?

• Mass and time

• Temperature and mass

• Mass and distance

• Distance and time

Tags

NGSS.MS-PS3-1

It is the force between two surfaces in contact that acts in a direction opposite to the direction of motion and causes the object to slow down and stop.

• friction

• gravity

• thrust

• lift

Tags

NGSS.MS-PS2-2

How does friction affect speed?

• more friction increases speed

• more friction decreases speed

• less friction decreases speed

• less friction doesn't affect speed

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

What does friction produce?

• light

• sound

• heat

• gravity

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-5

What is Isaac Newtons first law?

• For every action, there is an equal and opposite reaction.

• The greater the mass of an object ,the more force is needed to accelerate that object.

• An object in motion will stay in motion unless a force is acted upon it. An object at rest stays at rest unless a force is acted upon it.