A dodgeball has a mass of 0.50 kg and hits a person in the leg with a velocity of 12 m/s. After hitting the person, it bounced back with a velocity of 5 m/s. Based on time-lapse video, it was determined
the ball was in contact with the person for 0.07 s. If the change impulse of the collision is 3.5 kg m/s
What is the force exerted when the dodgeball made contact with the person's leg.

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.

Gordon is going for a run through the park, but it is cold outside. the low outside temperature could affect his personal safety.

Aprisoner is forced to go into one of three rooms, but he can choose which room. the first room is ablaze with fire. the second one is rigged with explosives that will go off as soon as he enters. the third contains a pair of lions who haven't eaten in years. which room should he choose to survive?