# Newtons first law

Newtons first law states that "an object at rest will remain at rest unless acted upon by a nonzero net force.  An object moving at a constant velocity will continue moving at a constant velocity un less acted upon by a nonzero force".  Newtons first law of motion is also called newtons first law of inertia. Inertia means all objects, moving or not, resist changes in motion.  Resistance to change in motion is called inertia. So inertia depends on mass, for example if you pick up a bag of 6 golf balls it would be much eaisier to carry than a bag of 6 basketballs because, 6 basketballs have less mass than a bag of 6 golfballs.

# Newtons second law

Newtons second law of motion states that"an object's acceleration depends on its mass and on the net force acting on it".  This relationship can be written in the equation acceleration= net force/mass. or can be rearranged to show how much force is required to get an object moving at a certain rate.  Acceleration is measured in meters per second. Mass is measured in kilograms.  Newtons second law shows that force is measured in kilograms times meters per second. The SI unit of force is represented by the newton which means 1 newton is required to give a 1kilogram mass an acceleration of 1 m/s squared.

# Newtons third law

Newtons third law states that "if one object exerts a force on another object, then the second object exerts a force of equal strength in the opposite direction on the first object".  Pairs of action and reaction forces are everywhere.  When you are running in a sport you are pushing against the ground and gravity is pulling you back down.  These kinds of actions also apply when Arizona State's basketball team shoots the basketball, there hands are throwing the ball into the air but gravity pulls the ball back down through the hoop. But these actions can cancel in a number of different ways for example, if you strap bricks on your feet and try to lift your feet and they don't move because the force on the shoes is grater than the your force lifting up.

### Comment Stream

3 years ago
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Who are you? I can't give you a grade until I know.

3 years ago
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ben schmidt