Question

The mass of car 2 is twice the mass of car 1. If both cars have the same velocity, how does the kinetic energy of car

2 compare to car 12
Car 2 has four times the kinetic energy
Car2gas twice the kinetic energy
Both cars have the same kinetic energy
Both cars increase in kinetic energy if they slow down
1) Intro
Do
• 0000000

Answer 1

Car 2 has twice the kinetic energy.

Explanation:

Answer 2

Car 2 has twice the kinetic energy than Car 1.

Explanation:

If a body of mass m moving at a speed of v, then its kinetic energy will be given by
`(1)/(2)mv^(2)`.

Now, given that the mass of car 2 is twice that mass car 1.

Let, the mass of car 2 is 2m and that of car 1 is m.

Therefore, if both cars moving with the same velocity v, then the kinetic energy of car 1 will be
`(1)/(2)mv^(2)` and the kinetic energy of the car 2 will be
`mv^(2)`.

Hence, Car 2 has twice the kinetic energy than Car 1. (Answer)