Inertia and friction unit 2 lesson 2

a force that opposes motion between any surfaces that are touching

• velocity

• friction

• inertia

• position

Inertia is the tendency of an object to resist a change in its ___________.

• temperature

• shape

• size

• motion

Because of inertia, a resting object will remain at ________.

• rest
• a constant speed
• school
• inertia 

What kind(s) of objects have inertia?

• all objects with mass
• only objects at rest
• only objects in motion
• only objects whose motion is being changed

Tags

NGSS.HS-PS2-1

What is the tendency of an object to resist a change in motion?

• coffee
• motion
• inertia
• gravity

Tags

NGSS.MS-PS2-2

How does friction affect speed?

• more friction decreases speed
• more friction increases speed
• less friction decreases speed

Tags

NGSS.3-PS2-1

The rougher the surface, the faster an object will travel over the surface.

• True
• False

Tags

NGSS.4-PS3-1

When most objects with smooth surfaces rub, there is less friction.

• True
• False

Friction is a force that acts in an ___________ direction of movement.

• similar
• opposite
• parallel
• west

Tags

NGSS.3-PS2-1

To make a door open easier you need to _______.

• reduce friction

• increase friction

• pull harder

• pull easier

Tags

NGSS.3-5-ETS1-2