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?

The most important difference between a wedge and an inclined plane is a. their size b. their shape c. how they are used d. what they are made of

The speed of sound in ice, water, and steam is shown. what best explains the speed of sound in different states of matter? sound travels fastest in ice because energy is easier to transfer when the molecules are close together. sound travels slowest in steam because the sound has to move around the gas molecules that are far apart. sound travels fastest in ice because the temperature of solids is always greater, so the heat transfers the sound energy. sound travels slowest in steam because the pressure is so great the sound cannot travel though the steam particles.

As a pendulum bob swings back and forth several times, the maximum height it reaches becomes less and less. this is because more and more of the pendulum bob's energy is being transformed into a. heat energy b. kinetic energy c. potential energy d. kinetic energy and potential energy