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Laws of Motion
Vocabulary
Net Force
Work
Graphs
100

An object at rest will remain at rest and an object in motion will remain in motion.

Newton's 1st Law
100

Speed that remains the same or does not change.

Constant Speed
100
What is the overall net force and in which direction will the force go if Bob pulls with a force of 12 N to the left, while Jim pulls with a force of 8N to the right.
Net force = 4N left
100
What is work? Provide the definition.

Using a force to move an object a distance in the same direction.

100
What does a horizontal line on a distance-time graph represent?
no motion
200

For every action, there is an equal opposite reaction.

Newton's 3rd Law
200

A Force that resists motion when two surfaces are touching.

Friction
200
Provide an example of an unbalanced force using a diagram showing the amount of forces applied.
answers will vary.
200

Amy uses 20N of force to push a lawn mower 10 meters. How much work does she do?

200 Joules
200
What does a line going down to the right on a Speed-Time graph represent?
Deceleration
300

The force of an object is equal to its mass multiplied by its acceleration

Newton's 2nd Law
300

An object's tendency to resist a change in motion.

Inertia
300

What is the Net Force on an object if the force on all sides are equal.

Net Force = 0 N
300

How much work is required to pull a sled 5 meters if you use 60N of force?

300 Joules
300
What does a line pointing down to the right on a distance-time graph represent?
Motion returning back to starting location.
400

The motion of a person NOT wearing a seat belt if the car stops suddenly.

Newton's 1st Law
400

The total distance an object travels divided by the total time traveled.

Average Speed
400

What is the net force of Bobby and Jim pulling a cart up a hill with a resistance of 12N, if Bobby uses 17N and Jim pulls using 14N? In Which direction is the net force applied.

19N up the hill.
400

The baseball player does 1234 Joules of work when hitting a baseball into left field. Assuming the

baseball landed 100 meters away from home plate, how much force did the player use to hit the

ball?

12.34 Newtons
400
What does crossing the 'x' axis represent on a Speed-Time graph?
Changing direction
500
This law explains why a canoe goes forward when you paddle backwards in the water.
Newton's 3rd Law
500

Speed in a given direction.

Velocity
500
What is the term given to objects when the Net Force does not equal zero?
Unbalanced
500

Angela uses a force of 25 Newtons to lift her grocery bag while doing 50 Joules of work. How far

did she lift the grocery bags? Units are in meters.

2 meters
500
What does a horizontal line on a speed-time graph represent?
Steady Speed