Question #0c378

1 Answer
Jan 12, 2018

Double

Explanation:

400% = 4, meaning the KE has increased 4 folds.

Let K_1= 1/2mv^2K1=12mv2

If you double the velocity, v->2vv2v, then
K = 1/2m(2v)^2=4 (1/2mv^2) = 4K_1K=12m(2v)2=4(12mv2)=4K1

Therefore the velocity has doubled.

KE increased by 9X if the velocity is tripled, 16X if quadrupled and so on...