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1st Law
Practice Problems
2nd Law
Forces
3rd Law
100

Newton's First Law

an object at rest will stay at rest unless acted upon by an unbalanced force. an object in motion will continue to move in the same direction and with the same speed unless acted upon by an unbalanced.

100

What does a newton measure?

Force

100

The formula commonly used to explain Newton's Second Law of Motion

F=ma or Force=mass*acceleration 

100
unit used to measure force

Newtons (N)  

100

Newtons Third Law

For every action there is an equal and opposite reaction.

200

An object's tendency to resist changes in its velocity

Inertia

200

A net force of 16 N causes an object to accelerate at of rate of 5 m/s^2. Determine the mass.

3.2 kilograms

200

The greater the mass of an object the lower the ___

Acceleration

200

Equal strength forces that are opposite in direction are?

Balanced forces 
200

When a force is being exerted onto an object, the object is exerting an equal amount of force in the opposite _________

Direction

300

why do objects in motion slow down even though no outside force is visible.

Friction

300

How much force is needed to accelerate a 66 kg skier 1 m/s/s. 

66 Newtons

300
the sum of all forces acting on an object

Net force 

300
when an __________ _____ acts upon an object, the object will accelerate
Unbalanced force
300

If a baseball forces a baseball bat to the left, what does the bat do to the baseball?

it forces it to the right

400

air/water resistance is also known as ___ friction

Fluid (friction) 

400

What is the force of a 1000 kg elevator that is falling freely at 9.8 meters/sec/sec?

9800 Newtons

400

acceleration is directly proportional to the net force acting on an object and inversely proportional to the object's mass 

Newton's Second Law of Motion 

400

When the sum off all balanced forces do not move the object, what is the net force?

Net force=0 

400

When you sit down on a chair, you exert a downwards force on the chair. in return, the chair exerts a _______ force on your body.

upwards

500

The initial friction when moving an object is called ___ friction

Static (friction)
500

What acceleration will result when a 12 N net force is applied to a 3 kg object?

4 m/s^2 or 4 m/s/s

500

force and acceleration have magnitude and direction making them..?

Vector quantities

500

When the sum of all forces acting upon an object do not cancel out and the object moves, what is the net force?

Net force>0 (Greater than Zero) 

500

when forces occur, they occur as _____ and ________ pairs. 

equal, opposite