Question

A truck has a mass of 1150 kg and a kinetic energy of 27,000 J. What is the speed of the truck?

Answer 1

The speed of the truck is 6.85 m/s.

Step-by-step explanation:

27000=1/2(1150)*v^2

27000=575*v^2

/575 /575

v^2=1080/23

√46.95=6.85 m/s

Answer 2

The speed of the truck is 6.85 m/s.

Step-by-step explanation:

We have,

Mass of truck is 1150 kg

Kinetic energy of the truck is 27,000 J.

It is required to find the speed of the truck. The kinetic energy is said to possessed by an object due to its motion. The formula of kinetic energy is given by :

`K=(1)/(2)mv^2`

v is speed of the truck

`v=\sqrt{(2K)/(m)} \\\\v=\sqrt{(2* 27000)/(1150)} \\\\v=6.85\ m/s`

So, the speed of the truck is 6.85 m/s.