23) A ball was thrown straight up into the air at 50. m/s, how fast was it going 2.2 seconds later? (acceleration = g = -9.8 m/s2)

How much work is done lifting a 9.10 kg box straight up onto a shelf that is 1.80 m high?

Calculate the heat capacity per object when the total energy is 4 quanta. (think of this in terms of increasing from 3.5 quanta of energy in the system to 4.5 quanta of energy in the system, if that were possible.) c4 = __ j/k/object

The respiratory system removes oxygen and water from the body. select the best answer from the choices provided t f