3. same questions as the previous problem, but for mass m just falling 3 meters in a vacuum: (a) how long does it take mass m to fall 3 meters? (b) what is its final velocity (with direction)? (c) explain what physics principle makes (b) be the same or different in problems (2) and (3).

Which of the following are considered noble gases? a. bromine b. neon c. argon d. chlorine

Arocket starts from rest and moves upward from the surface of the earth. for the first 10.0 s of its motion, the vertical acceleration of the rocket is given by ay = 12.80 m/s32t, where the +y-direction is upward. (a) what is the height of the rocket above the surface of the earth at t = 10.0 s? b) what is the speed of the rocket when it is 325 m above the surface of the earth?

1kg of water needs to recieve 4200j of energy to go from 90 degrees to 91 degrees. what is the specific heat capacity of water? what are the units?