Question

8. A body of mass 60 kg is moving with a speed
50 m s-1. Find its kinetic energy.
​

Answer 1

Explanation:

we know that

$kinetic \: energy \: = \frac{1}{2} m {v}^{2}$

given that

m= 60kg ,

$v = {50ms}^{ - 1}$

$k.e = \frac{1}{2} (60) {(50)}^{2}$

$= \frac{1}{2} (60)(2500)$

$= 75000j$

HOPE IT HELPS..............

Answer 2

Answer:-

Given:-

• Mass of the object = 60 kgs
• Speed = 50 m s^-1

To Find:-

Kinetic Energy of the body.

____________...

We know,

Kinetic Energy = ½mv²

where,

• m = Mass of the particle.
• v = Speed of the particle.

∴ Kinetic Energy = ½ × 60 kg × 50 m/s × 50 m/s

= 30 kg × 50 m/s × 50 m/s

= 30 kg × 2500 m²/s²

= 7500 kg m²/s²

= 7500 J ...(Ans.)