Vocabulary
Mass vs Weight
Newton's Laws
Which Law Applies?
Using Fnet=ma
100

A push or pull

What is a Force?

100

The amount of matter something has. Units are kg.

What is Mass

100
An object at rest will _________
stay at rest
100

A hockey puck on a frictionless table will keep moving at a constant velocity until it is hit.

What is Newton's First Law

100

Find the net force required to push a 5 kg object with a 2 m/s2 acceleration

What is 10 N

200

A chance in an object's velocity or direction.

What is acceleration

200

Force of gravity.

What is Weight

200

Unbalanced forces makes objects _____________

accelerate

200

It takes less force to move a soccer ball than a bowling ball.

What is Newton's Second Law

200

A 12 kg object experienced a 24 N net force. Find the acceleration.

What is 2 m/s2

300

When in free fall, this is what happens when drag force equals force of gravity.

What is Terminal Velocity

300

An object has a mass of 55 kg. Find its weight on Earth. Include units.

gearth = 9.8 , gmoon = 1.6

What is 539 N

300

Every force has an _______________ reaction force

Equal and opposite

300

You swim forward by pushing water backwards.

What is Newton's Third Law

300

A 20 kg box was pushed with a force of 85 N. Friction opposed the push with 25 N. Find the box's acceleration.

What is 3 m/s2

400

A perpendicular reaction force. Prevents a book from falling through a table.

What is Normal Force

400

An object has a mass of 65 kg. Find its mass on the Moon.

gearth = 9.8 , gmoon = 1.6

What is 65 kg

400

An object in motion will stay in motion, with a _____________ , until an external force acts on it.

What is Constant Velocity

400

You lurch forward when a car slams on the brakes.

What is Newton's First Law

400

In tug of war, the rope was pulled with 2000 N of force in both directions. The combined mass of people was 400 kg. Find the rope's acceleration.

What is 0 m/s2

500

An object's resistance to change in movement. Depends on mass.

What is Inertia
500

An object has a weight of 40 N on the Moon. Find its weight on Earth.

gmoon = 1.6 , gEarth = 9.8

What is 245 N

500

A book with a mass of 3 kg is sitting motionless on a table. Find the normal force acting on the book.

What is 29.4 N

500

A rocket accelerates upward by exerting a force downwards.

What is Newton's Third Law

500

A 2kg object was held by a spring scale. It was yanked upward with an acceleration of 2.5 m/s2. Find FT , the tension on the spring scale.

gearth = 9.8

What is 24.6 N

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