Newton's 1st Law
What was the first law?
An object at rest remains at rest and an object in motion remains in motion unless acted upon by an outside force
What does the second law state
Unbalanced forces acting on an object equals the object’s mass times its acceleration
What does the third law state
For every action force, there is an equal and opposite reaction force
What is weight
A measure of the gravitational force exerted on an object
All objects in the universe attract each other through the force of gravity T/F
T
It needs to have what?
A net force
Less mass equals what
Greater acceleration
Force never occurs in pairs T/F
False
What is mass
A measure of the amount of matter in an object
What is the equation?
F=G ((m1m2)/d2)
What are the main net forces on earth?
Inertia and Gravity
1 Newtons equals what
0.225 pounds
The forces are occurring at the same time T/F
True
How do you find total body weight
Mass x free-fall acceleration constant
States that force increases if one/both masses increase or distance decreases T/F
T
What was Newtons first law also known as
The law of inertia
When did Isaac Newton discover the second law
1686
What could cause two forces not to have equal effects
The mass of the object it is acting on
Does mass ever change
No
G is not constant T/F
False
Inertia
How do you calculate it
Mass x Acceleration
When did Isaac Newton discover the third law
1686
Does weight ever change
Yes it depends on the gravitational pull
The force can be looked at in two ways T/F
True