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WorksheetsForces and Acceleration (F.3 and F.4) Review
Total questions: 36
Worksheet time: 30mins
Newton’s 3rd law states that for every action, there is an equal and _______ reaction.
balanced
opposite
unbalanced
Forces always occur _______.
in the same direction
alone
in pairs
Newton’s 3rd law is also known as the law of _______.
inertia
action & reaction
force & acceleration
A rock on the ground weighs 40 N. How much force does the ground exert on the rock?
20 N
0 N
40 N
Based on Newton’s 3rd law, the force pairs always act on _______.
different objects
the same object
objects in motion
You sit in a chair. You push the chair down. What is the reaction force?
Gravity pushes the chair up.
The chair pushes you down.
The chair pushes you up.
A bug hits a windshield. The force of the bug on the windshield is _______ the force of the windshield on the bug.
greater than
less than
the same as
A bug hits a windshield. The ACCELERATION of the bug will be _________ the acceleration of the car.
greater than
less than
the same as
What is the acceleration of the bowling ball if it has a mass of 2.2 kg?
5 m/s2
1.36 m/s2
12.7 m/s2
24.2 m/s2
The acceleration of the skateboarder will increase.
The acceleration of the skateboarder will decrease.
Why would one object have a greater acceleration than another when pushed with the same amount of force?
The objects have different weights.
The objects have different forces.
The objects have different masses.
The objects are different sizes.
Johnny has a mass of 10 kg. He sits on a desk. He is pushed with a force of 75 N. What is Johnny's acceleration?
0.75 m/s2
2 m/s2
7.5 m/s2
15 m/s2
If both forces are going in the same direction you should______ those forces
Add
Subtract
Divide
Multiply
When forces are going in the opposite direction of each other you should do what do find the net force
Subtract
Add
Divide
Multiply
How are action and reaction force pairs and balanced forces related?
All forces cancel out in both
Action/Reaction forces are in the same direction and Balanced Forces are opposites.
Action/Reaction forces are opposite directions and Balanced Forces are the same direction.
Action/Reaction forces act on 2 objects while Balanced Forces act on one object
If you throw a ball at the ground, the ground exerts a force on the ball. The ball exerts no force on the ground.
True
False
Pick the best example of Newton’s third law of motion in action.
A parachute pushes down on the air and the air pushes up in the opposite direction.
A soccer ball comes to a stop because friction is pulling it in the opposite direction.
An planet moving around the Sun while being pulled toward the Sun.
A dancer spinning because there are no forces acting on it.
Select all possible outcomes for this object with the following forces.
The object will speed up to the right.
The object will move at a constant speed.
The object will remain at rest (stationary).
The object will speed up to the left.
A force diagram for a 50 kg diagram is shown. What is the acceleration of the object in m/s2?
(a)
What was observed about the readings shown on the two spring scales?
Scale #1 was greater than Scale #2.
Scale #1 was equal to Scale #2.
Scale #1 was less than Scale #2.
Which best illustrates Newton's Third Law?
A dog pulls on a sled hard enough so that the sled speeds up.
A skateboard hits a wall with the same strength that the wall pushes back on the skateboard.
A fan cart moves along a track at a constant speed because the fan's force and friction are balanced.
A soccer ball rolls to a stop as it travels across a field.
A baseball bat hits a ball. They exert equal forces on each other according to Newton's Third Law. Which of the following is TRUE?
The ball exerts a smaller force on the bat than the bat on the ball.
The ball has a greater acceleration because it has a smaller mass.
The bat has a greater acceleration because it has a larger mass.
The ball and the bat have equal acceleration because the forces are equal.
Which of the following scenarios best demonstrates Newton's First Law of Motion?
A book remains at rest on a table until a force is applied.
A car accelerates when the driver steps on the gas pedal.
A ball is thrown upwards and comes back down due to gravity.
A rocket launches into space due to the thrust of its engines.
Two ice skaters push off from each other. Skater A has a mass of 50 kg and Skater B has a mass of 75 kg. Which statement is TRUE about their accelerations?
Skater A will have a greater acceleration than Skater B.
Neither skater will accelerate.
Skater B will have a greater acceleration than Skater A.
Both skaters will have the same acceleration.
A force that requires two pieces of matter to touch is a (a)
Match the following
Fnet = -100 N
Fnet = 100 N
Fnet = 200 N
Fnet = 150 N
Fnet = 0 N
Refer to the picture. What is the net force?
15N
5N
50N
2N
A student drops a basketball onto the floor. According to Newton's 3rd law, why does the ball bounce?
The student dropped the ball
The earth pulls the ball down
The ball presses down on the floor
The floor presses up on the ball
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
When a small car pushes a big truck, the truck applies an equal and opposite force on the car.
False
True
When the person pushes on the brick wall, and the wall pushes back, why does the person move and not the wall?
The wall has more mass so it resists moving more than the person
The person is pushing harder than the wall
The wall is pushing harder than 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
