Question

The mass of a person is 65 kg. How fast should he run so that his kinetic energy is 812•5j
(Ans​

Answer 1

Step-by-step explanation:

K.E=0.5mv^{2}v

2

812.5=0.5*65*v^{2}v

2

√(812.5*2)/65=v

v=5m/s

Answer 2

Answer:

K.E =0.5mu2

812.5=0.5* 65*I

√(812.5*2)/65=V

V= 5m/s