8.2-Newton's Laws Test Review

Newton's Laws

Multiple Choice

 What is the unit called that measures force?

• weight
• meter
• Newton
• kilogram

Multiple Choice

How do Newton's Laws of Motion apply to sports activities, amusement park rides, Earth’s tectonic forces, and rocket launches?

• These activities all seem fun.

• Each of these activities require movement.

• They do not have anything to do with Newton's Laws of Motion.

• Rockets are cool.

Multiple Choice

The tendency of an object to resist a change in motion is...

• inertia
• kinetic energy
• vector
• net force

Multiple Choice

Objects in motion,

• Will slow down due to balanced forces

• Will speed up due to balanced forces

• will remain in motion due to balanced forces

Multiple Choice

You are driving to a birthday party with the cake sitting in the passenger's seat. You slam on your brakes to avoid hitting a deer. This causes the cake to splatter all over your dashboard and the floor of the passenger's side. Which of Newton's Laws best explains why this happens?

• Newton's First Law (Inertia)

• Newton's Second Law (Net force = mass x acceleration)

• Newton's Third Law (Action/Reaction)

• Law of Universal Gravitation

Multiple Choice

What unit is force measured in?

• Joules

• Inches

• MPH

• Newtons

Multiple Choice

A car with a velocity North encounters a force pushing it South. Ignoring all other factors, what will the motion of the car do?

• speed up

• slow down

• stay at a constant speed

• turn

Multiple Choice

What type of force will cause an object to move?

• Twist force
• Balanced force

• Spin force
• Unbalanced force

Multiple Choice

Objects at rest,

• Will start to move due to balanced forces

• Will stay at rest due to unbalanced forces

• will remain at rest due to balanced forces

Open Ended

Why are these forces in the picture on the previous slide balanced?

Multiple Choice

A force of 90N is applied to each cart below, which one will accelerate the fastest?

• Cart 1
• Cart 2
• Cart 3 
• Cart 4

​Example question:

​How much force is required to accelerate a 2kg mass at 3m/s²?

​

force = mass x acceleration

force = 2 x 3

force = 6 N​

​

How much force is required to accelerate a 10kg mass at 3m/s²?

​

Force = 10 x 3

force = 30 N​

Multiple Choice

Your 2500 kg car experiences a net force of 5000 N. How fast will it accelerate?

• 20 m/s²

• 0.5 m/s²

• 2 m/s²

• 120 N

Match

Match the word or sentence part to the corresponding answer

• Object in motion will

• Object at rest will

• Inertia

• Balanced force

• Unbalanced force

stay in motion

stay at rest

tendency of object to resist change

Forces opposite but equal in size

Forces opposite but not equal in size

• stay in motion

• stay at rest

• tendency of object to resist change

• Forces opposite but equal in size

• Forces opposite but not equal in size

Multiple Choice

A 20 kg bike accelerates at 10 m/s².  what was the force?

• 25 Newtons
• 20 Newtons
• 200 Newtons
• 10 Newtons

Multiple Choice

Unbalanced forces cause a change in...

• Motion

• Direction

• Speed

• All of the above

Multiple Choice

Which of the following is the reason that an object starts moving or stops moving?

• There is no forces acting on the object.

• There is a balance of forces acting on the object

• There is an unbalance of forces acting on the object

Multiple Choice

Newton's Third Law States...

• Objects in motion stay in motion and objects at rest stay at rest
• Force is equal to mass times acceleration
• For each action there is an equal and opposite reaction

Open Ended

What is the Net Force?

Multiple Choice

A player throws a ball. The action force is the player pushing on the ball. The reaction force is...

• The force of the ball pushing on the player

• The force of the grip of the ball
• The celebration the player is thinking of

Multiple Choice

A baseball player bats a ball with a force of 1,000 N. The ball exerts a reaction force (without any additional forces action on it) against the bat of...

• Less than 1, 000 N
• 1,000 N
• More than 1,000 N

Multiple Choice

A rocket pushes exhaust with 10, 000 N of force. Without any other forces acting on the rocket, how much force pushes the rocket forward?

• 15,000 N
• 1,000 N
• 10, 000 N

Multiple Choice

What force is acting on a moving object that helps to slow it down?

• Frictional Force

• Normal Force

• Applied Force

• Tension Force

Multiple Choice

What is friction?

• The force that causes movement

• The force that causes a moving object to slow down when it touches another object

• The force that causes an object to accelerate

• The force that causes an object to change directions

Multiple Choice

Since friction is a force, what unit is friction measured in?

• Joules

• MPH

• Newtons

• Inches

Newton's Third Law

​Action and Reaction

For every action force there is an opposite and equal reaction force acting

Multiple Choice

Newton's First Law is also know as what?

• Law of Inertia
• Law of Motion
• Kepler's Law
• Principle of Relativity

Open Ended

What does speed measure?

Multiple Choice

Which of the following is an example of Newton's 1st Law?

• A space shuttle launches from the Earth.

• It takes less force to push an empty grocery cart than to push a cart full of groceries.

• A rider on a dirt bike hits a rock and goes flying over the handle bars.

• An elephant runs away when he sees a mouse.

Open Ended

How are speed and velocity different?

Dropdown

When you are walking you are using Newton's third law. You apply a force ​

Select answer

as you step down. At the same time, the surface of the ground exerts a force ​

Select answer

on you. Because you are ​

Select answer

than the ground, you are propelled up and​

Select answer

.

Multiple Choice

For every action, there is a(n) ______________ reaction

• opposite and equal

• opposite and unequal

• same and equal

• same and unequal

Open Ended

What are the three times acceleration happens?

Draw

Draw arrows to show where the rocket is pushing force and the opposite force that is equal and causes the motion of the rocket.

Draw

Please draw your response on this slide. If you wish to type your response move to the next slide to type your response.

Fill in the Blank

According to Newton's 2nd Law it takes ____________ force to move an object that has a larger mass.

Open Ended

Design a safety restraint or device for a motorcycle, 4-wheeler, or go-kart. Designs may be drawn or described. Be sure to explain how your devices protects the driver against collision forces.

Multiple Choice

A pitcher throws a 2 kg softball accelerates at 7 m/s² . What is the force? (F=ma)

• 14 N
• 10 N
• 5 N
• 20 N

Multiple Choice

The acceleration of an object depends on what two things?

• Mass and Speed

• Mass and Force

• Force and Speed

• Speed and Motion

Multiple Choice

What is inertia?

• An object at rest will stay at rest unless acted on by another force

• Movement

• When an object starts to move without an outside force

Match

Match the word with its definition

• Acceleration

• Force

• Mass

• Speed

Change of Speed

Push or Pull

The matter or stuff an object is made of

Distance covered over time

• Change of Speed

• Push or Pull

• The matter or stuff an object is made of

• Distance covered over time

Open Ended

List one more example of Newton’s First Law.

Multiple Choice

Which object would have the most mass?

• Bike

• Car

• Tire

• Steering Wheel

Open Ended

Cars, trucks, and SUVs use seatbelts as safety devices. Roller coasters use bars. Use Newton’s 1st Law of Motion to explain how the seatbelt or restraint bar help keep you safe in a collision. Be sure to identify forces and velocity.

Multiple Choice

Which example below is an example of Newton's 3rd Law?

• Rocket launching into space
• Bird flying in the sky
• Person walking in the park
• Car driving down the road

Reorder

Reorder the following from needing more force to needing less force to accelerate

• Big Rig

• Car

• Moped

• Bike

• Skateboard

1

2

3

4

5

• 1
• 2
• 3
• 4
• 5

Multiple Choice

When an action occurs when does the opposite reaction take place?

• 1 minute later

• 3 seconds later

• the next day

• immediately

Multiple Choice

What is the formula for force?

• Force = Distance x Time

• Force = Mass x Acceleration

• Force = Mass / Acceleration

• Force = Distance / Time

Dropdown

​

Select answer

=​

Select answer

x​

Select answer

Poll

Do you like having Quizizz questions built into your notes?

• Yes! We should do this all the time!

• No! It makes them take too long.

• Do not choose this answer.

Dropdown

When you are shopping in the grocery story you are applying Newton's third law. At first the force you apply is ​

Select answer

because there is very little to ​

Select answer

. As you start to add objects the mass of the cart ​

Select answer

. This causes you to have to apply a ​

Select answer

amount of force to keep the cart moving. So, you are demonstrating that ​

Select answer

requires more force to cause the same amount of acceleration

​Summary

Motion that we see is due to the forces that are applied to and act on objects. Newton was able to develop three laws that explain the motion we see via the forces.

Open Ended

Answer the following questions from the picture:

Open Ended

Describe Newton's Three Laws of Motion.

Open Ended

Explain how Newton's Laws of Motion apply to sports activities, amusements park rides, Earth’s tectonic activities, and rocket launches.

Open Ended

Which essential questions do you still need help to understand?