Question

If the KE of a ball is 200 J and if it has a mass of 1kg, what will be it's speed.? ​

Answer 1

Answer:

KE=1/2mv²

200J=1/2*1kg*v²

v²=200*2

v²=400

v=20m/s

Answer 2

Answer:

we know that,

kinetic energy = 1/2 mv^2

Explanation:

so,

200=1/2×1×v^2

200×2=v^2

400=v^2

hence , v= 20