An object has a kinetic energy of 25 j and a mass of 34 kg, how fast is the object moving?

1 Answer
Daniel H.
Feb 18, 2018

#KE = 1/2 mv^2#., rearrange the question and solve for velocity

Explanation:

In this case, #KE = 1/2 mv^2->25J=1/2*34kg*v^2#

Then , #50J=34kg*v^2#

#v^2={50kg*m^2/s^2}/{34kg}#

I'll let you finish the problem. Your units will be in m/s. Also, since the problem is asking for speed and not velocity, use the positive square root.

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