Question

calculate the decrease in the kinetic energy of a moving body if its velocity reduces to half of the initial velocity......??

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Answer 1

Answer:

K.E=0.5×m×v  ^2  

K.E(new)=0.5×m×(v/3)  ^2

K.E(new)=0.5×m×v  ^2 /9

K.E−K.E(new)=(1−1/9)0.5×m×v  ^2 =(8/9)0.5×m×v  ^2

Explanation: