Question

A vehicle of mass 1000 kg has a kinetic energy of 20000j at an instant. The velocity at that instant is

Answer 1

$p = \sqrt{2m \times k.e} \\ 1000v = \sqrt{2 \times 1000 \times 20000} \\ 1000v = \sqrt{40000000} \\ v = \frac{ \sqrt{40000000} }{1000} \\ v = \frac{6324.555}{1000} \\ v = 6.324 m/s$