A75 g frisbee is thrown from a point 1.0 m above the ground with a speed of 14 m/s. when it has reached a height of 2.0 m, its speed is 10.1 m/s. what was the reduction in emec of the frisbee-earth system because of air drag?

Explanation:

It is given that,

Mass of Frisbee, m = 75 g = 0.075 kg

It is thrown 1 meter above the ground,

Speed with which it is thrown,

When it has reached a height of 2.0 m, , its speed is 10.1 m/s,

We know that the mechanical energy is equal to the sum of kinetic energy and the potential energy.

The change in kinetic energy,

The change in potential energy,

So, the reduction in mechanical energy is given by :