Question

13. The mass of the body is 20 kg . It is moving with the speed of 5 m/s. It's kinetic energy is *
1000 J
750 J
260 J
350 J​

Answer 1

*Answer:—

• 250 Joules.

Step by Step Explanation:—

Given that,

→ Mass of 20 kg is moving with a uniform velocity of 5 m/s

We know that the kinetic energy (Ek) possessed by a body of mass (m), moving with a uniform velocity (v) is :-

→ Ek = (1/2)mv²

Here,

=> Mass = 20 kg

=> Velocity = 5m/s

$\begin{gathered} => Ek = \frac{1}{2} \times 20 \times {5}^{2} \\ \\ = > 10 \times 25 \\ \\ = > 250\end{gathered}$

So,

The kinetic energy possessed by the body is 250 Joules.