Newton's Laws

Newton's Law of Inertia (first law) describes the motion of-

• Objects at rest only
• Objects in motion only
• Objects at rest and objects that are in motion
• Objects that accelerate

Which law best explains why people remain in motion when a car crashes, if they are not wearing a seat belt?

• Law of Inertia

• Law of Acceleration

• Law of Action - Reaction

• Law of Gravitation

Tags

NGSS.MS-PS2-2

Which law best explains why more force must be applied to the bowling ball to make it accelerate at the same rate as the tennis ball. 

• Law of Inertia

• Law of Acceleration

• Law of Action - Reaction

• Law of Gravitation

Tags

NGSS.MS-PS2-2

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

• Law of Inertia

• Law of Acceleration

• Law of Action - Reaction

Tags

NGSS.MS-PS2-1

What is Newtons 2nd law of motion?

• An object at rest stays at rest unless acted on an unbalanced force.
• For every action there is a equal and opposite reaction

Which force causes an object to speed up or slow down (accelerate or decelerate)?

• unbalanced force
• balanced force

Tags

NGSS.MS-PS2-2

 267.5 N unbalanced force applied to push a stuffed chair across the room, causing an acceleration of 4.2 m/s2. What is the mass of the chair?

• 26.75 kg
• 63.69 kg 
• 263.3 kg 
• 1123.5 kg

Tags

NGSS.MS-PS2-2

A net force of 15 N is exerted on an encyclopedia to cause it to accelerate at a rate of 5 m/s2. Determine the mass of the encyclopedia?

•  m = 3.0 kg
• m = 4.0 kg 
• m = 3.0 ml 
• m = 30.0 g

Tags

NGSS.MS-PS2-2

What is the force necessary to accelerate a 1785 kg car at a rate of 50 m/s/s?

• 89,250 N
• 35.7 N
• 98.8 N
• 75,620 N

Tags

NGSS.MS-PS2-2

What is the unbalanced force on a boy and his skateboard if the total mass of the boy and skateboard is 62 kg and their acceleration is 0.36 m/s/s forward?

• 22.32 N
• 172.2 N
• 180 N
• 24 N

Tags

NGSS.MS-PS2-2