State Newton's Second Law?
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Newton's Second Law of Motion says that acceleration (gaining speed) happens when a force acts on a mass (object). Riding your bicycle is a good example of this law of motion at work. Your bicycle is the mass. Your leg muscles pushing pushing on the pedals of your bicycle is the force
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Rate of change of momentum of a body is directly proportional to the net external force applied on it and change in momentum takes place in the direction the force is applied.
Newton's second law of motion is also known as momentum(P).It is the product of the mass(m) and velocity(v) of an object.The rate of change of momentum of an object is directly proportional to the unbalanced external force acting on it. The direction of the unbalanced force is the same as the direction of the change of momentum.
P = mv
Let the mass of an object = m
initial velocity = u
final velocity = v
Therefore -
Initial momentum = mu
Final momentum = mv
Rate of change of P =
=
= m*a = F
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