FORMULA TO USE: Kinetic Energy = ½(mv2) M=Mass V=Velocity. Make sure you follow order of operations. You must square the velocity, then multiply it by the mass, then multiple that answer by ½.

A runner has a mass of 75 kg and a kinetic energy of 3,500 J. What is the runner’s speed?
Show work please.

Question

FORMULA TO USE:  Kinetic Energy = ½(mv2)  M=Mass V=Velocity.  Make sure you follow order of operations.  You must square the velocity, then multiply it by the mass, then multiple that answer by ½.

A runner has a mass of 75 kg and a kinetic energy of 3,500 J.  What is the runner’s speed?
Show work please.

.sam. · Answer

$$\huge KE=\frac{1}{2}mv ^{2}$$
$$\huge 3500=\frac{1}{2}(75)(v)^{2}$$
$$\huge v=9.66ms ^{-1}$$