12 Test Review

Match the following

• 2nd Law

• Force is measured in this unit

• 1st Law

• Law of inertia

• gravity

• Forces act in pairs

• Newtons

• F = ma

• 3rd Law

• Satellites orbit due to this

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-4

First Law of Motion ​ (a)   ​ (b)   ​ (c)   ​ (d)  

• an object at rest stays at rest
• an object in motion stays in motion
• law of inertia
• force = mass X acceleration
• forces act in pairs
• Why we use seatbelts

Match the following

• momentum

• Greatest force on Earth

• acceleration

• Property of all moving objects;

  p = mv

• free fall

• Motion when only gravity is acting on an object

• gravity

• A push or pull on an object

• force

• Change in velocity

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What is mass? ​ (a)   ​ (b)  

• the amount of matter in an object
• never changes
• measure of gravitational force on an object
• Can change due to location

Newton's first law of motion applies to:

• moving objects

• nonmoving objects

• all objects

• no objects

When gravity and air resistance (friction) are the same it is called?

• acceleration

• gravity

• free fall

• terminal velocity

Tags

NGSS.MS-PS2-2

Air bags and car seats are necessary because of passengers?

• weight

• inertia

• acceleration

• momentum

Tags

NGSS.MS-ETS1-1

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Any change in an objects velocity is caused by?

• its mass

• a balanced force

• unbalanced force

• none of these

Tags

NGSS.MS-PS2-2

The curved path an object follows when thrown or launched near the surface of the Earth is called?

• projectile motion

• gravity

• free fall

• orbit

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Gravity ____________ between two objects the larger their masses are.

• increases

• decreases

• stays the same

• accelerates

Tags

NGSS.MS-PS2-4