U2 Forces Test Review

​Unit 2 Forces:
Test Review

By Maria Cerca

You will be tested on definitions as well as calculations.

​

Use your notes to review.

Mathematical Relationships
Newton's 2nd Law

• Mass and acceleration

As one measurement increases, the other decreases

Indirectly Proportional

• Force and acceleration

• Mass and Inertia

As one measurement increases, so does the other.

Directly Proportional

Mathematical Relationships
Newton's 2nd Law

• Mass and acceleration

As one measurement increases, the other decreases

Indirectly Proportional

Mathematical Relationships
Newton's 2nd Law

• Force and acceleration

• Mass and Inertia

As one measurement increases, so does the other.

Directly Proportional

Drag and Drop

If the Force doubles (2F), then the acceleration

Placeholder

.

Drag these tiles and drop them in the correct blank above

doubles

triples

quadruples

halved

Drag and Drop

If the mass is halved (1/2F), then the acceleration

Placeholder

.

Drag these tiles and drop them in the correct blank above

doubles

triples

quadruples

halved

Drag and Drop

If the Force is halved (1/2F), then the acceleration

Placeholder

.

Drag these tiles and drop them in the correct blank above

halved

triples

quadruples

doubles

Multiple Choice

What is Newton's 3rd Law of Motion?

• For every action, there is an equal and opposite reaction.

• For every action, there is no reaction.

• For every action, there is a smaller and opposite reaction.

• Every action has a greater reaction.

Multiple Choice

What is an action-reaction pair of forces?

• An action-reaction pair of forces is a pair of forces that are equal in magnitude and same in direction.

• An action-reaction pair of forces is a pair of forces that are unequal in magnitude and opposite in direction.

• An action-reaction pair of forces is a pair of forces that are equal in magnitude and opposite in direction.

• An action-reaction pair of forces is a pair of forces that are equal in magnitude and different in direction.

Multiple Choice

Give an example of an action-reaction pair of forces.

• Pulling a rope and the rope Pushing you.

• Kicking a ball and the ball bouncing away.

• Squeezing a sponge and the sponge expanding back.

• Pushing a wall and the wall pushing back

Multiple Choice

When do equal and opposite forces occur?

• When two objects interact with each other

• When two objects are moving in the same direction

• When an object is at rest

• When two objects are at rest

Multiple Choice

How does Newton's 3rd Law apply to everyday situations?

• Newton's 3rd Law only applies to objects in motion.

• Newton's 3rd Law is not applicable to everyday situations.

• Newton's 3rd Law only applies to scientific experiments.

• Newton's 3rd Law explains how forces interact with each other in everyday situations.

Multiple Choice

When a student runs and kicks a ball, they have applied an ___________ force to move the ball.

• Balanced

• Magnetic

• Spring

• Unbalanced

Multiple Choice

Which law of motion says that you must push or pull objects harder if they have more mass?

• 1st

• 2nd

• 3rd

• 4th

Multiple Choice

What law is best described by inertia?

• 1st

• 2nd

• 3rd

• law of conservation of mass

Multiple Choice

Why is the net force 0 in the image?

• Because the elephants are the same size
• Because they are both pulling the same amount of force in opposite directions
• Because they are elephants
• Because they are pulling away from each other.

Multiple Choice

Letting go of a balloon full of air is demonstrating Newton's ______ _______ ________ _________ because the air comes out of the back and the balloon moves forward.

• 1st law of motion

• 2nd law of motion

• 3rd law of motion

• 13th law of motion

Multiple Choice

A magician pulls a tablecloth out from under dishes and glasses on a table without disturbing them.

• Newton's 1st Law
• Newton's 2nd Law
• Newton's 3rd Law

Multiple Choice

Which type of force(s) will cause a change in an object's motion?

• gravity
• zero net force
• balanced forces
• unbalanced forces

Multiple Choice

What makes a rolling ball stop moving?

• Gravity
• Friction
• A balanced force
• An applied force

Multiple Choice

Pushing a child on a swing is easier than pushing an adult on the same swing, because the adult has more mass.

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

• None of them

Multiple Choice

Mass is a measure of an object's inertia. Objects with greater mass have a greater inertia; objects with less mass have less inertia.

• true 
• false 

Multiple Choice

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

Multiple Choice

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

Multiple Choice

What Newtons law does this picture represent

• Newtons 1st law

• Newtons 2nd law

• Newtons 3rd law

• Newtons 4th law

Multiple Choice

Which law explains that it would take more force to push the car than the lawnmower?

• 1st

• 2nd

• 3rd

Multiple Choice

F=Ma
An object of mass 300 kg is observed to accelerate at the rate of 4 m/s².  Calculate the force required to produce this acceleration. 

• 75 N
• .013 N
• 1200 N
• 2 N

Multiple Choice

Which box has an acceleration of 1 m/s²?

• Box A

• Box B

• Box C

• Box D

Multiple Choice

What is the magnitude of the Net External Force of this FBD?

• 200 N

• 600 N

• 800 N

• 0 N

Multiple Choice

Name the missing force...

• applied force
• weight force
• lift
• normal force

Multiple Choice

Name the missing force...

• tension force
• frictional force
• normal force
• spring force

Multiple Choice

Name the missing force...

• frictional force
• weight force
• thrust
• buoyant force

Multiple Choice

Name the missing force...

• thrust
• frictional force
• normal force
• weight force

Multiple Choice

What is the NET FORCE of this diagram?

• 17 N, right

• 17 N, left

• 23 N, right

• 12 N, up

Multiple Choice

What can you tell about the forces on F and H?

• They must be unbalanced.

• They are negative.

• They must be the same.

• They are equal to the net force.

Multiple Choice

What is the overall Net Force?

• 10 N, Left

• 671 N, Right

• 601 N, Left

• 70 N, Right

Multiple Choice

Which of the following diagrams shows the forces correctly labeled on an object in motion to the right?

Multiple Select

Calculate the net force for the diagram.

• 800 N down unbalanced

• 600N down balanced

• 400 N down unbalanced

• 400 N up unbalanced

Multiple Choice

Inertia is related to the ____ of an object.

• weight

• mass

• velocity

• force

• distance

Multiple Choice

Force and acceleration are

• directly proportional.

• inversely proportional.

• equal.

• not enough information is given.

Multiple Choice

Gravitational forces are always directly down, but Normal forces are

• always directly up.

• always perpendicular to the surface.

• at 45 degrees from the gravitational force.

Multiple Select

When forces are balanced, the motion of the object is described as

• at rest.

• moving at constant velocity.

• moving at constant velocity, in a straight line path.

• accelerating.