Newton's Third Law says that every action has an ____ reaction.

• equal and opposite
• unbalanced and balanced

• new and old

Tags

NGSS.MS-PS2-1

When the bus hits the parked car, the bus ​ (a)   and the car ​ (b)   .

• slows down
• speeds up

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

When the bus hits the parked car, it exerts a force on the car of 25 N.

How much force does the car exert on the bus?

• 25 N

• More than 25 N

• Less than 25 N

Tags

NGSS.MS-PS2-1

The car has ​ (a)   than the bus, so the car has ​ (b)   than the bus.

• less mass
• more mass
• more acceleration
• less acceleration

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

Newton's First Law states that an object in motion will ​ (a)   , and an object at rest will ​ (b)   , unless acted upon by ​ (c)   .

• stay in motion
• stay at rest
• an unbalanced force
• a balanced force

Newton's First law is also called the Law of ___.

• Acceleration
• Inertia
• Gravity
• The Land

At the start, the speed of the ladder is ___ the speed of the truck.

• Equal to

• Faster Than

• Slower Than

When the truck hits the bus, the bus applies a ​ (a)   , so the truck ​ (b)   .

• unbalanced force
• stops moving
• balanced force
• speeds up
• moves at a constant speed

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

When the truck hits the bus, the ladder ​ (a)   because ​ there is no ​ (b)   .

This is an example of ​ (c)   because the ladder keeps doing what it was doing.

• keeps moving
• unbalanced force
• inertia
• stops moving
• balanced force
• acceleration
• velocity

Tags

NGSS.MS-PS2-2

Some bungee cords could have stopped ​ (a)   but could not have stopped ​ (b)   .

This is because the ladder has ​ (c)   mass than the truck, so it has ​ (d)   , and requires a ​ (e)   force to change its motion.

• the ladder
• the truck
• less
• less inertia
• more inertia
• weaker
• stronger

Tags

NGSS.MS-PS2-2