Newton's 3rd Law Test Review

Question 1

When you walk, your foot pushes backward, & the ground pushes forward, allowing you to move in the direction of your ___

Accepted Answer

motion

Question 2

Which design would best minimize the force of impact for a dropped egg?

Accepted Answer

A lightweight structure with cushioning materials

Question 3

Which material would be best for absorbing impact in a helmet design?

Accepted Answer

Soft foam with an outer plastic shell

Question 4

Which of the following best explains why crumple zones in cars help keep passengers safe?

Accepted Answer

They absorb energy by crumpling reducing the force of impact on passengers.

Question 5

If you let go of an inflated balloon, air rushes out one way, causing the balloon to move in the __________ direction.

Accepted Answer

opposite

Question 6

What is the main purpose of padding in sports equipment?

Accepted Answer

To absorb energy and increase the time of impact

Question 7

Forces always __________ in pairs.

Accepted Answer

interact

Question 8

When you __________ against a wall, the wall pushes back with an __________ force.

Accepted Answer

push; equal

Question 9

A bird flying forward does so because its wings push air downward, creating an upward __________ force.

Accepted Answer

reaction

Question 10

Newton’s Third Law states that for every __________, there is an __________ and __________ reaction.

Accepted Answer

action; equal; opposite

Question 11

Why do seatbelts help reduce injury in a car crash?

Accepted Answer

They apply a force over time to reduce impact

Question 12

Airbags in cars help protect passengers by:

Accepted Answer

Spreading out the force over time

Question 13

What is one way to reduce the force of impact during a collision?

Accepted Answer

Increase the time of impact

Question 14

2 different bicycle helmets are dropped with weights inside. What is the best way to evaluate which helmet is safer?

Accepted Answer

Measure the force of impact on each helmet

Question 15

A swimmer moves forward in the water because they __________ the water backward, and the water pushes them forward.

Accepted Answer

push

Questions 15