Question

a truck of mass 5000 kilogram travelling at 40 metre per second is brought to rest by applying brakes. the truck comes to rest after travelling 20m after the application of brakes what is the kinetic energy of truck​

Answer 1

Answer:

Explanation: The kinetic energy of the truck will be 40,00,000 joules or 400 kj.

Answer 2

Answer:

K. E=1/2 mv^2

=1/2*5000*40*40

=4000000

=4*10^6 is the kinetic energy