I don’t know sorry ;khbadkhb didhwbck( khwdicdwbihwd
For any object thrown upwards where only the force of gravity is acting upon it, uses the following formula for the maximum height attained.
H= v²/2g, where g = 9.81 m/s²
There are two information of velocities are given. However, we use the 20 m/s information because this is the launch velocity. Hence, the solution is as follows:
H = (20 m/s)²/2(9.81 m/s²)
<em>H = 20.4 m</em>
Velocity. Net force causes acceleration and acceleration causes a change in direction and/or magnitude of velocity
By the work energy theorem, the total work done on the stone is given by its change in kinetic energy,

We have


Then the total work is
