During the Powerhouse lab, Jerome runs up the stairs, elevating his 97 kg body a vertical distance of 3.45 meters in a time of 2.14 seconds at a constant speed. How much power did he use? Use g= 10 m/s/s

Sunidhi made a study chart about changes in states of matter. which headings best complete the chart?

Two cannon balls weighing 18 kg and 24 kg are chained together and fired horizontally with a velocity of 165 m/s from the top of a 21-m wall. the chain breaks during the flight of the cannonballs and the 18-kg cannonball strikes the ground at t = 1.5 s, at a distance of 240 m from the foot of the wall, and 7 m to the right of the line of fire. determine the position of the other cannonball at that instant. neglect the resistance of the air.

List and describe three ways that humans can change ecosystems and three ways that humans can protect ecosystems.