Question

What is the mass of a car that is traveling at 20 m/s and has a 400,000 J of kinetic energy

Answer 1

`2000kg`

Step-by-step explanation:

Kinetic Energy Equation:
`KE = (mv^2)/2`

KE: Kinetic energy of the object

m: Mass of the object

v: Velocity of the object

`400000=(m*20^2)/2`

`800000=400m`

`m=2000kg`