During basketball practice shane made a jump shot, releasing a 0.60 kg basketball from his hands at a height of 2.0 m above the floor with a speed of 7.6 m/s. the ball swooshes through the net at a height of 3.0 m above the floor and with a speed of 4.5 m/s. how much energy was dissipated by air drag from the time the ball left shane's hands until it went through the net?

5.373 J

Explanation:

mass of ball (m) = 0.6 kg

initial height (h1) = 2 m

initial speed (u) = 7.6 m/s

final height (h2) = 3 m

final speed (v) = 4.5 m/s

acceleration due to gravity (g) = 9.8 m/s^{2}

from the conservation of energy ,

change in kinetic energy + change in potential energy = 0

in this case;

       = 0.5m()

       Uair = -0.5m() - mg(h2-h1)

       Uair = -0.5x0.6() - 0.6x9.8(3-2)

       Uair = -(-11.253)- 0.6x9.8(3-2)

       Uair = 5.373 J

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.