Answer:
K'= 2 K
v'= v√2
Step-by-step explanation:
As we know that
From work power energy
Work done by all the force = Change in kinetic energy
F . x = K
When distance become 2 x
Then
F.2 x = K'
K' = 2 F . x
K'= 2 K
We know that


K'= 2 K

v'²= 2 v²
v'= v√2