A4.00 kg stone is dropped from a height of 145 m. what is the stone's potential and kinetic energy respectively when it is 50.0 m from the ground?

D - 1,960 J, 3,720 J

At a height of 50 m from the ground, the potential energy will be;

= 4 × 9.8 × 50

= 1960 Joules

This means that some of the energy possessed by the stone at a height of 145 m was converted to kinetic energy.

Therefore; the energy that was converted to kinetic energy will be;

= 5,680 J - 1960 J

= 3,724 Joules

Approximately kinetic energy is 3,720 Joules

Therefore;

The Potential energy is 1960 Joules and Kinetic energy is 3,720 Joules

the rearrangement of particles in a physical change. hope this

54 degrees incident angle = reflected angle

angle is from normal turned to line of ray