WorksheetsQuiz- Chapter 7: Newton’s Third Law (12/18)
Total questions: 26
Worksheet time: 20mins
(True or False.) According to Newton's third law forces come in pairs?
(a)
The (a) of an object is the force of gravity on the object.
A dog plays with a ball. Consider the action force the dog touching the ball. What is the reaction force?
The friction of the ground on the ball.
The ball pushing the ground.
The ground pulling the dog.
The ball touching the dog.
An unfortunate bug splatters against the windshield of a moving car. Compared to the force of the car on the bug, the force of the bug on the car is
larger.
the same.
smaller
need more information to say.
According to Newton's third law, if you push gently on something, it will push
gently on something else.
on you only if you aren't moving.
gently on you
on something only under the right conditions.
Earth pulls on the moon, and similarly the moon pulls on Earth. This is evidence that the
Earth and moon are simply pulling on each other.
Earth's and moon's pulls comprise an action-reaction pair.
both a and b
neither a or b
Based on Newton's third law of motion, when a person at rest on a skateboard throws a heavy concrete block to the north, the person will be pushed to the ___________.
north
south
east
west
Your friend pushes you for making fun of them. What is the reaction force?
You pushing back on your friend
You pushing on the ground
There is no reaction force
Your friend pushing on the ground after you smash them in the face.
When you jump up, you push the earth downwards. Why can't you tell that the earth has moved?
The force of you jumping up doesn't actually push the earth down.
The earth has much more mass so it doesn't move at all
The earth is firmly rooted
The earth has much more mass so you can't tell that it moved
If you weigh 1000 N and hang from a pair of ropes, what is the force of tension in each rope?
1000 N
10 N
500 N
Not enough info to tell
When a heavy football player and a light one run into each other, who exerts more force? (pushes harder)
The light one
They exert the same force on each other
The heavy one
Depends on their velocities
What happens to the balloon if the air is released ? Explain your answer.
Which law is this?
1st
2nd
3rd
Which law is this?
1st
2nd
3rd
If the person is pushing backwards with the paddle, why do they move forward?
The person will actually move backwards, they need to paddle the other way
The water pushes back with an equal and opposite force
The person is pushing harder than the water
The water pushes back with a greater force than the person
If a person pushes down on a trampoline, why do they move back up into the air?
The trampoline pushes back with a greater force than the person
The trampoline pushes back with less force than the person
The trampoline pushes back with an equal and opposite force as the person
How is this an example of Newton's 3rd Law?
Only his head is pushing on the ball
Only the ball is pushing on his head
Both the ball and the head are exerting equal force on each other
When the person pushes on the wall, and the wall pushes back, why does the person move and not the wall?
The wall has more mass
The person is pushing harder than the wall
The wall is pushing harder than the person
The skateboard is pushing on the person
A book rests on a table. The force of gravity pulls down on the book with a force of 20N. What prevents the book from falling down into the ground?
The table and the book are pushing back with an acceleration of 9.8m/s2.
The table pushes back up on the book with a force greater than 20N
The inertia of the book is equal to the inertia of gravity
The table pushes back up on the book with an equal and opposite force of 20N
When Ronda Rousey got kicked in the face, what are the action and reaction forces?
The foot pushing on face and face pushing on foot
Ronda Rousey and media criticism
The foot pushing on the air and air on foot
Ronda Rousey pushing on the floor and floor on Rhonda Rousey
What will happen if the Action is greater than the Reaction?
The man will fall
The boat will sink
Nothing will happen
