Question

How does the kinetic energy of a 10,000-kg train traveling at a speed of 10 m/s compare with that of a 2,600-kgcompact car traveling twice as fast?

Answer 1

\[\rm kinetic~energy = \dfrac{1}{2}mv^2\]

Answer 2

\(m\) is the mass. \(v\) is the speed/velocity (either would work in this case).

Answer 3

Does the train has more kinetic energy?

Answer 4

Did you calculate it for both of them?

Answer 5

yes… but is it supposed to have a decimal?