NEWTON’S LAWS OF MOTION. Isaac Newton. NEWTON’S LAWS OF MOTION. 1 st Law – An object at rest will stay at rest, and an object that is moving will keep on moving at the same speed and in the same direction, unless acted upon by an unbalanced force (Law of inertia).
Unless acted upon by an unbalanced force, this golf ball would sit on the tee forever
Your pencil case has inertia, it stays stationary. What happens when you apply force to it?Unless acted upon by an unbalanced force, your book would keep on moving with the same speed and direction – forever!
F = m x a
=2800 kg/m/s2 or 2800 N
12 N = 3 kg x 4 m/s/s
16 N = 3.2 kg x 5 m/s/s
For every action force, there is an equal and opposite reaction force.
According to Newton, whenever objects A and B interact with each other, they exert forces upon each other.
When you sit in your chair, your body exerts a downward force on the chair and the chair exerts an upward force on your body.
The action and the reaction force are of the same size, but act in different directions