2) During a fire drill a fire fighter jumps on a net from 10 height. The net stretches 1 meter before coming to rest.
a) How long does it take to fall on the net?
b) What is the velocity of the jumper just before hitting the net?
c) How long does it take to stop during the stretch period?

1) when you rub your hands together quickly, the kinetic energy is converted to mechanical energy.2) thermal energy from the sun travels to earth as infrared waves.3) energy is transferred through the matter of space by electromagnetic waves. 4) when a match is burned, chemical potential energy is converted to thermal and radiant energy. 5) seismicwaves are caused by back and forth movement , or vibration, of an object. 6) mechanicalenergy in an engine changes thermal energy into kinetic energy to make a car move.

Your answer is 1.5 hope i  

Magma  is composed of molten rock and is  stored  in the earth's crust. lava is  magma  that reaches the surface of our planet through a volcano vent.