Answer:
1/4th
Explanation:
KE = .5mv^2
So when we decrease the velocity by half, we end up losing three fourths of net energy due to that value being squared.
Answer:
The Kinetic Energy is reduced to 1/4 of the original K. E.
Explanation:
K. E. = 1/2 m v^2
If v becomes v/2 we have:
K E. = 1/2 m (v/2)^2
= 1/2 m v^2/4
So dividing the 2:
we get 1/2 m v^2/4 / 1/2 m v^2
= v^2/4 / v^2
= v^2 / 4v^2
= 1/4.
