Question

A 6.7kg object moves with a velocity of 8m/s. What's its kinetic energy?

Answer 1

Given parameters:

Mass of object = 6.7kg

Velocity = 8m/s

Unknown parameter:

Kinetic energy = ?

Energy is defined as the ability to do work. There are two forms of energy;

Kinetic and potential energy.

Kinetic energy is the energy due to the motion of a body. Whereas, potential energy is the energy due to the position of a body usually at rest.

Kinetic energy is mathematically expressed as;

Kinetic energy =
`(1)/(2) m v^(2)`

where m is the mass of the body

v is the velocity of the body

Since we have been given both mass and velocity, input the parameter to solve for the unknown;

Kinetic energy =
`(1)/(2)` x 6.7 x 8² = 214.4‬J

So the kinetic energy of the body is 214.4‬J