Question

a moving car of mass 1200 kg has 2.96*100000 j of kinetic energy. calculate it's speed

Answer 1

K.E = $\frac{1}{2} mv^{2}$

2.96 ( $10^{5}$ )= 1200( $v^{2}$ )

v = 4.8 x $10^{2}$ m/s