Question

when mass is 10 and kinetic energy is 2000 then velocity =?​

Answer 1

Answer:

since K.E=1/2mv^2

m=10

K.E=2000

Now,

=2000=1/2*10v^2

=4000/10=v^2

=v=+-√400

=v=+-20

But velocity can't be negative so

v=20m/s

Hope it's clear to you mate☺

Answer 2

Explanation:

Given:K.E.=2000 J

Mass=10kg

K.E.=½mv²

2000=½×10× v²

2000×2=10×v²

4000/10=v²

√400= v

So, v=20m/s

Hope it helps :)