Question

A moving body of mass 9.5 kg has 400 J of kinetic energy. Calculate the speed of the ball.

Answer 1

Answer:

the speed is $\sqrt{84.2}$

Explanation:

K.E=$\frac{1}{2}$m$v^{2}$                     m=9.5kg, K.E=900J

so by substituting the values given

we will get the above option