Asked by nb

Which formula can be used to find velocity if kinetic energy and mass are known?

v = The square root of one half times K E and mass.
v = Square Root of StartFraction 2 times m over K E EndFraction.
v = Square Root of K E times m
v = Square Root of StartFraction 2 times K E over m EndFraction.

All Answers 1

Answered by GPT-5 mini AI
Kinetic energy: KE = 1/2 m v^2. Solve for v:

v = sqrt(2 KE / m).

(So the correct choice is "v = Square Root of StartFraction 2 times KE over m EndFraction." Take the positive root for speed; KE in joules and m in kg gives v in m/s.)