Ch.12: Newtons law's and Forces.

​Concept Check Questions.

Some text here about the topic of discussion

Multiple Choice

What is a force?

• the PUSH or PULL on an object

• The MOTION an object creates

• The objects HITTING one another

• Going REALLY FAST

Multiple Choice

What unit do we measure Force in?

• Newtons

• Joules

• Force

• Kilograms

Multiple Choice

Object at rest stays at rest.

• 1st

• 2nd

• 3rd

Multiple Choice

Forces are Equal in size and Opposite in direction

• 1st

• 2nd

• 3rd

Multiple Choice

For every Action there is a Reaction

• 1st

• 2nd

• 3rd

Multiple Choice

Object in motion stays in motion.

• 1st

• 2nd

• 3rd

​Multiple forces

The overall force causes by one or many forces. An object will accelerate when there is a nonzero net force.

Multiple Choice

Are forces balanced or unbalanced when a marble speeds up rolling down a ramp?

• Balanced
• Unbalanced

Multiple Select

This diagram can be used to indicate which of the following? (TWO correct answers)

• a object at rest

• an object moving at a constant velocity (speed)

• an object accelerating

• (Trick question -- there is only one correct answer)

• an object decelerating

Multiple Choice

Whenever an object is moving, there is always this force opposing the motion:

• normal force

• gravity

• friction

• applied force

Multiple Choice

What is the net force?

• 40 N left

• 0 N Balanced

• 400 N right

• 40 N right

Multiple Choice

Which of the following is a characteristic of a balanced force?

• Equal in size, opposite in direction

• Causes a change in the direction of an object

• Causes a change in motion of an object

• Causes object to move

Multiple Choice

The sum of all forces acting on an object is known as…

• Applied force

• Net force

• Normal force

• Gravitation force

Multiple Choice

Which of the following is a characteristic of an unbalanced force?

• Equal in size, opposite in direction

• Does not cause a change in motion of an object

• Causes a change in motion of an object

• No motion

Multiple Choice

Calculate the Net Force

• 0 N

• 7 N Right

• 28 N Right

• 28 N Left

Multiple Choice

 

Calculate the Net Force

• 2 N Right

• 12 N Right

• 2 N Left

• 12 N Left

Multiple Choice

What is the net force?

• 65 N left
• 65 N right
• 35 N left
• 35 N right

Multiple Choice

What is the net force?

• 5.5 N left
• 5.5 N right
• 2.5 N left
• 2.5 N right

Multiple Choice

What is the net force?

• 1.3 N left
• 1.3 N right
• 3.7 N left
• 3.7 N right

Multiple Choice

In which direction will the box accelerate?

• Down and to the left
• Up and to the right
• Up and to the left
• Down and to the right

Multiple Choice

Force = Mass x Acceleration

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

• Newton's 4th Law

Open Ended

What is the net force needed for a 160 kg car to accelerate forward to 2.0 m/s² ?

Multiple Choice

If a 10 kilogram object accelerates suddenly at 15 m/s^2, how much force was applied to the object?

• 150 Newtons
• 15 Newtons
• 150 kilograms
• 100 kilograms

Multiple Choice

A car is 2000kg and accelerating at 20m/s², what is the net force applied to it?

• 40000 N
• 100 N
• 5 N
• 200 N

Multiple Choice

How much force is needed to accelerate a 2 kg physics book to an acceleration of 6 m/s/s?

• 36 N
• 12 N
• 3 N
• 0.33 N

Multiple Choice

A cannonball with a mass of 10 kg is flying at an acceleration of 5 m/sec/sec. What is it's force?

• 50 Newtons
• 5 Newtons
• 20 Newtons
• 9.5 Newtons

Multiple Choice

A force of 250 N is applied to an object that accelerates at a rate of 5 m/sec². What is the mass of the object?

• 100kg

• 1,250kg

• 50kg

• 5kg

Multiple Choice

What is the acceleration of a 50 kg object pushed with a force of 500 newtons?

• 100 m/s²

• 25,000 m/s²

• 10 m/s²

• 25 m/s²

Multiple Choice

A fireman turns on his hose & is knocked backwards

• 1st Law 
• 2nd Law
• 3rd Law

Multiple Choice

It takes less force to move a DVD than a DVD player

• 2nd Law
• 1st Law
• 3rd Law

Multiple Choice

You have to push a heavy ball harder to get it to move as fast as a small one

• 1st Law
• 2nd Law
• 3rd Law

Multiple Choice

A soccer ball will not move until a player kicks it

• 1st Law
• 2nd Law
• 3rd Law

Multiple Choice

more force = more acceleration

• 1st Law
• 2nd Law
• 3rd Law

Multiple Choice

If air is let out of a balloon quickly, air pushes down & balloon goes up

• 1st Law
• 2nd Law
• 3rd Law 

Multiple Choice

It takes less force to push a bike than a motorcycle

• 1st Law
• 2nd Law
• 3rd Law