Question

The mass pf body is 25 kg. If it is moving with a speed of 15m/s, find its kinetic energy?​

Answer 1

Answer:

Tip:

It is the amount of effort required to propel a body of a given mass from rest to a certain velocity.

Explanation:

1. The body retains its kinetic energy after gaining it during acceleration unless its speed changes.
2. When the body decelerates from its current speed to a condition of rest, it does the same amount of effort.
3. Only when v is significantly less than the speed of light is this a fair approximation in relativistic mechanics.

Final answer:

In classical mechanics, the kinetic energy of a non-rotating object of mass m travelling at a speed $1/2 mv^{2}$

As from the equation of Kinetic Energy,

K.E = 0.5*25*(15^2)

= 0.5*25*(15^2)

= 2812.5J.