Question

A ball with 1550 J of energy is traveling at 5 m/s, what is its mass?

Answer 1

124 kg

Step-by-step explanation:

The kinetic energy of the ball is given by

`K=(1)/(2)mv^2`

where

m is the ball's mass

v is its speed

In this problem, we have:

K = 1550 J

v = 5 m/s

Solving for m, we find the mass:

`m=(2K)/(v^2)=(2(1550))/(5^2)=124 kg`