Question

find the mass of the body which has 5 joule of kinetic energy while moving at a speed of 2m/s2​

Answer 1

Answer:

Given, kinetic energy of the body, E  k =5J;

speed of the body, v=2m/s

If m is the mass of the body, then, E  k  =   1/2 mv^2

or m=   2E  k/v^2 =   2×5/2^2 =2.5kg

Step-by-step explanation:

Answer 2

Answer:

m = 10/4 = 2.5Kg

Step-by-step explanation:

We know,

Kinetic Energy (K.E) =  $\frac{1}{2}mv^2$

here, K.E = 5J & V = 2m/s ( why did you write $m/s^2$ when you've mentioned speed?)

=> 5 =  $\frac{1}{2}m(2)^2$

=> (5)(2) = 4m

Therefore m = 10/4 = 2.5Kg

Hope you've understood the solution .

BTW brainliest?