The kinetic energy of an object of mass m, moving with a velocity of 5 m/s is 25J
what will be its kinetic energy when its velocity is doubled?
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Answer:
hyyy
Explanation:
Using the formula for the kinetic energy we have :
K.E =1/2mv²
25 = 1 / 2 × 5²
m = 2kg
(i) Kinetic energy when velocity is doubled :
K.E = 1 / 2 mv²
= 1/ 2 × 2× 10²
= 100J
(ii) Kinetic energy when velocity is tripled :
K.E = 1/ 2mv²
= 1/ 2 × 2 × 15²
= 225J
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