What is the kinetic energy of a 5 kg ball that is traveling with a constant velocity a distance of 100 meters in 8 seconds ?

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Answer 1 · 2017-10-21T19:20:47

Answer: #390.625# J

Note that #KE=1/2mv^2#, where #KE# is kinetic energy, #m# is mass, and #v# is velocity

We are given:
#m=5# kg
#Deltad=100# m
#Deltat=8# sec

Since the ball travels at constant velocity, we can use the formula #v=(Deltad)/(Deltat)#:
#v=100/8=12.5# m/s

Plugging #m# and #v# into the formula for kinetic energy, we get:
#KE=1/2mv^2=1/2(5)(12.5)^2=390.625# Joules.