1. Derive formula of kinetic
energy
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Explanation:
v ^ 2 - u ^ 2 = 2as… This statement states that a work W is done by a body to move from one position to another by a distance s when the force F is applied to a body at rest. This work done on the body is because of Kinetic energy (K.E) of the body.
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Answer:
kinetic energy = work done on it to make it gain that velocity
W = Fs
F = ma
v2 - u2 = 2as
s = v2 - u2 / 2a
W = ma x v2 - u2/2a
= mv2 - mu2/ 2
= 1/2 m (v2-u2)
if u = 0:
KE = 1/2 mv2
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