Newton's Laws
What is a force?
A push or a pull
This is a measure of how fast something moves through a distance in a given amount of time.
What is speed?
What unit is used to measure speed?
m/s
What unit is used to measure acceleration?
m/s2
What is the unit for force?
Newtons (N)
What does Newton's First Law of motion say?
An object at rest stays at rest & an object in motion will stays in motion unless acted upon by an outside force
What formula would you used to solve for force?
mass x acceleration
If we are calculating net force of an object and we have two opposing forces we need to ___________ the forces to get net force
Subtract
What happens if there is no force acting upon an object?
It will continue to move at the same speed in the same direction.
What does Newton's second law say?
Acceleration depends on force and mass. More force = more acceleration. More mass = less acceleration.
If an object is Balanced, the Net Force would only be equal to?
0 N
A rock is at rest on the sidewalk. What type of force is acting on the rock AND what is the net force?
A balanced force
Net force= 0N
What does Newton’s Third Law say?
For every action, there is an equal and opposite reaction.
A change in a moving object's speed or direction is..
What is Acceleration?
Two objects are pushed with the same force. One has a much larger (big) mass than the other. According to Newton’s 2nd Law, which object accelerates more and why?
The smaller mass object because with the same force, less mass means more acceleration (F = m × a)
This acts to oppose/resist change in motion....
Inertia
A combined force that causes something to move...
An Unbalanced Force
What slows down the motion of an object or keeps it from starting?
Friction