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.
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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.)
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.)
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