Question

A shot-putter throws an 8.00 kg shot at a speed of 10.0 m/s. What is the kinetic energy of the shot?

Answer 1

Ekin=1/2*m*v^2 so 1/2*8*(10m/s)^2 = 400Nm Or J

Answer 2

Kinetic energy of the shot is 400 Joules

Step-by-step explanation:

It is given that,

Mass of the shot, m = 8 kg

Speed of thrown, v = 10 m/s

We have to find the kinetic energy of the shot. It is given by the product of mass of an object and the square of velocity divided by 2 i.e.

`KE=(1)/(2)mv^2`

`KE=(1)/(2)* 8\ kg* (10\ m/s)^2`

KE = 400 Joules

Hence, the kinetic energy of the shot is 400 joules.