Question

What is the kinetic energy of a 30 gram ball that is rolling at a speed of 2 meters per second

Answer 1

0.06 J

Step-by-step explanation:

The kinetic energy of an object is given by:

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

where

m is the mass of the object

v is the speed

For the ball in this problem,

m = 30 g = 0.030 kg

v = 2 m/s

Therefore, the kinetic energy of the ball is

`K=(1)/(2)(0.030 kg)(2 m/s)^2=0.06 J`