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Newtons Third Law

Total questions: 10

Worksheet time: 2mins

Name
Class
Date
1.

Your friend pushes you for making fun of him/her. What is the reaction force?

a)

You pushing back on your friend

b)

You pushing on the ground

c)

There is no reaction force

d)

Your friend pushing on the ground

2.

When you jump up, you push the earth downwards. Why can't you tell that the earth has moved?

a)

The force of you jumping up doesn't actually push the earth down.

b)

The earth has much more mass so it doesn't move at all

c)

The earth is firmly rooted

d)

The earth has much more mass so you can't tell that it moved

3.

What causes a jet ski to move forward?

a)

The motor pushes the jet ski forward

b)

The water pushes the jet ski forward

c)

The person pushes the jet ski forward

d)

Gravity pushes the jet ski forward

4.

Why is it easier to stand up if you push something down?

a)

The thing you push down pushes you up

b)

Your arms push your body up

c)

It helps your legs get proper posture

d)

It actually doesn't help, its just a mental thing

5.

If you push your friend in a shopping cart with 40 N at constant velocity, what is the force of friction on the cart?

a)

40 N

b)

More than 40 N

c)

Less than 40 N

d)

Depends on the surface and type of wheel

6.

When weight lifters raise the bar...

a)

They are exerting less force than the bars weight

b)

They are exerting an equal force to the bars weight

c)

They are exerting more force than the bars weight

d)

It depends on how heavy the bar is

7.

Attach two spring scales together and pull each one apart with a force of 10 N. What is the reading on the scales?

a)

10 N for both

b)

20 N for both

c)

0 N for one and 10 N for the other

d)

10 N for one and 20 N for the other

8.

If you weigh 1000 N and hang from a pair of ropes, what is the force of tension in each rope?

a)

1000 N

b)

10 N

c)

500 N

d)

Not enough info to tell

9.

Force always come in________

a)

waves

b)

triplets

c)

pairs

10.

Newtons law states that for every action, there is an_________ reaction

a)

unequal and opposite

b)

stronger and opposite

c)

equal and similar

d)

equal and opposite