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WorksheetsNewton's 3rd Law Practice
Total questions: 23
Worksheet time: 49mins
What is a force?
something that always causes motion
a type of acceleration
a current
a push or a pull
Newton’s 3rd Law of motion states that any action will have a(n) ________and ______reaction
Equal and similar
Equal and different
Equal and opposite
Greater and opposite
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
When a small car pushes a big truck, the truck applies an equal and opposite force on the car.
False
True
A book rests on a table. The force of gravity pulls down on the book with a force of 20 N. What prevents the book from falling down into the ground?
The table and the book are pushing back with an acceleration of 10 m/s2.
The table pushes back up on the book with a force greater than 20 N
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 20 N
A bus hits a bug and the bug splatters on the windshield, which force is greater?
When a heavy football player and a light one run into each other, who exerts more force?
The light one
Their force are equal
The heavy one
A baseball bat hits a baseball with a force of 100 Newtons. What is the force and its direction exerted by the ball on the bat?
100 Newtons, same direction
100 Newtons, opposite direction
200 Newtons, opposite direction
200 Newtons, same direction
When a cannon fires a cannonball we observe Newton's third law. Which is the reaction force?
The cannon moving forward
The cannon moving backwards
The cannonball moving backwards
The cannonball moving forward
How is this an example of Newton’s Third law?
Only the ball is using the head
They are both exerting an equal force on each other
Only the head is pushing the ball
When a cannon fires a cannonball we observe Newton's third law. The acceleration of the cannon ________ the acceleration of the ball.
is greater than
is less than
is equal to
A bus hits a bug and the bug splatters on the windshield, which acceleration is greater?
The Bus
The Bug
They're the same
Gravity acting on the bus
A bus hits a bug and the bug splatters on the windshield, which mass is greater?
The Bus
The Bug
They're the same
Gravity acting on the bus
According to Newton’s Third Law, if someone jumps off a skateboard, the skateboard will roll backward because -
the mass of the skateboard is the same as the mass of the person jumping off.
the pull of gravity on the person is the same as on the skateboard, regardless of size.
the air resistance on the person is great and the friction on the skateboard is small.
for the force that sent the person forward, there is an equal force pushing back on the skateboard.
The head of a hammer is often made of steel. This makes the head heavy, which helps create a strong force for driving nails. Steel is also strong. The head of a hammer must be strong to resist what force?
The force of the air resistance on the moving hammer
The force of the person using the hammer
The force of gravity pulling down on the hammer
The force of the nail pushing in the opposite direction
Which of Newton's Laws of Motion does this Newton's cradle demonstrate?
Newton's 1st Law of Motion (interia)
Newton's 2nd Law of Motion (F=m * a)
Newton's 3rd Law of Motion (action-reaction)
A rocket is able to accelerate in the vacuum of space when it fires its engines. The force that propels the rocket is the force
of the rocket on the exhaust gases.
of the exhaust gases on the rocket.
neither A nor B
