Question

Find the velocity of a 2 kg falling rock that has a kinetic energy of 150 Joules

Answer 1

Here is your answer my friend.
Kinetic energy =
$\frac{1}{2} mv {}^{2}$
Given that K.E is 150j,mass of body is 2kg
=> 150 = 2v^2
75=v^2
=>v=√75
=>v=8.6m/s