# A projectile of mass 0.750 kg is shot straight up with an initial speed of 18.0 m/s. How high would it reach with no air resistance? What is the average force of the air exerted on it if the projectile reaches a max height of 11.8 with air resistance?

##### 1 Answer

Jun 3, 2017

The force of the air resistance is

#### Explanation:

The loss in kinetic energy is

The initial velocity is

The final velocity is

The height is

There is a loss of potential energy due to air resistance

This is equal to the work done by the force of air resistance

The force of the air resistance is