Question

Work done on a ball of mass 500g with 4m/s without using kinetic energy formula

Answer 1

We cannot solve this problem without K.E. formula

so , we know that

K.E.=1/2×mass×velocity^2

Fiat convert 500g into kg by dividing by 1000

$k.e. = \frac{1}{2} \times \frac{500}{1000} \times (4) {}^{2}$

$k.e. = \frac{1}{2} \times \frac{1}{2} \times 16$

HENCE, K.E.= 4J

hope it helps you

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