Question

how fast should a man of 50kg run so that his kinetic energy be 625j​

Answer 1

Answer:

Velocity of man should be 5 m/s

Explanation:

K.E = 0.5mv²

v = sqrt(2K.E / m)

= sqrt(2 × 625 Joule / 50 kg)

= sqrt(625 Joule / 25 kg)

= 5 m/s

Velocity of man should be 5 m/s

Answer 2

Answer:

Explanation:

M=50 kg

KE=625 J

K=1/2M×V×V

V^2=25

V=5m/s