Question

How fast should man of mass 50 kg run so that his kinetic energy be 625 j

Answer 1

Hlo friend.. Cutiepie Here..

Here is ur answer :

Mass of man = 50 kg

Kinetic energy of man = 625 J

We have to find velocity of man.

Let the velocity be v.

$k.e. = \frac{1}{2} m {v}^{2}$

$625 = \frac{1}{2} \times 50 \times {v}^{2}$

$625 = 25 \times {v}^{2}$

${v}^{2} = \frac{625}{25}$

${v}^{2} = 25$

$v = \sqrt{25}$

$v = 5$

Velocity of man is 5 m/ s.

HOPE IT HELPS YOU

:-)

Answer 2

Hey Friend ✋✋✋

m = 50 Kg

K.E = 625 Joules

v = ?

K.E = ½ mv²

625 = ½ × 50 × v²

v² = 625 / 25

v² = 25

v = 5 m/s

man should run at the speed of 5 m/s
Hope it helps