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FORMULAS
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Newton's laws of motion Through Newton's second law, which states: The acceleration of a body is directly proportional to the net unbalanced force and inversely proportional to the body's mass, a relationship is established between Force (F), Mass (m) and acceleration (a). This is of course a wonderful relation and of immense usefulness. F = m x a Knowing any two of the quantities automatically gives you the third !! Momentum p = mv Often physics problems deal with momentum before and after a collision. In such cases the total momentum of the bodies before collision is taken as equal to the total momentum of the bodies after collision. That is to say: momentum is conserved. |
Impulse
This is the change
in the momentum of a body caused over a very short time. Let m be the mass and v
and u the final and initial velocities of
a body.
Impulse = Ft = mv - mu
