Question

A motorcycle moving 18.8 m/s has
57800 J of KE. What is its mass?

Answer 1

m = 327.07 kg

Step-by-step explanation:

Given that,

Kinetic energy of a motorcycle, E = 57800 J

Velocity of the motorcycle, v = 18.8 m/s

We need to find the mass of the motorcycle. The kinetic energy of an object is given by :

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

m is mass

`m=(2E)/(v^2)\\\\m=(2* 57800 )/((18.8)^2)\\\\m=327.07\ kg`

So, the mass of the motorcycle is 327.07 kg.