Question

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 ?

Steps please, thank you ^_^

Answer 1

Answer: `390.625` J

Explanation:

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.