Question

A car traveling at 10 m/s has 200000J of kinetic energy. What is the mass of the car?

Answer 1

Answer:

4000kg

Explanation:

1/2mv^2=200000

1/2m×100=200000

m=4000

Answer 2

Answer:

Given, kinetic energy = 1/2mv² = 200000J.

velocity = 10m/s

To find : Mass

Solution : 1/2m(10)² = 200000J

1/2 × 100 × m = 200000J

50m = 200000J

m = 200000/50

m = 4000kg.