Question

A ball of mass 0.5kg has 100j of kinetic energy. what is the velocity of the ball ?​

Answer 1

Answer:

$0.5m {v}^{2} = 100j$

$0.5 \times 0.5 \times {v}^{2} = 100$

${v}^{2} = 100 \div 0.25$

${v}^{2} = 400$

$v = 20$

velocity of the ball is 20m/s