Question

How much kinetic energy does a truck with a mass of 2500 kg moving at 45 m have

Answer 1

Kinetic energy,
`K=2.53* 10^6\ J`

Step-by-step explanation:

We have,

Mass of the truck is 2500 kg. It is moving with a speed of 45 m/s.

It is required to find the kinetic energy acting on the truck. As it is moving with some velocity, it will have kinetic energy. The kinetic energy of an object is given by :

`K=(1)/(2)mv^2`, m is mass and v is velocity

`K=(1)/(2)* 2500* 45^2\\\\K=2.53* 10^6\ J`

So, the kinetic energy of the truck is
`2.53* 10^6\ J`.