Two balls, P and Q, are dropped simultaneously from the same height Ball P has TWICE the mass of ball Q. Ignore the effects of air friction.
Just before the balls hit the ground, the kinetic energy of ball P is x. The
kinetic energy of ball Q, in terms of x, will be ...
a.1/4
b.1/2x
c. x
d.2x
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Ais not a compound machine. a. bolt b. shovel c. handcart (dolly) d. see-saw (teeter totter)

Scout feels ill one day before school. her mother puts a thermometer in her mouth and the temperature begins to climb to 100°f. what is happening between the cooler thermometer and scout's body? a) scout's body is applying a force to the particles in the thermometer. b) kinetic energy is being transferred from her mouth to the thermometer. c) potential energy is being lost by the thermometer and gained by scout's body. d) the potential energy stored in foods is converted to mechanical energy to raise the mercury in the thermometer.

Which of the following is an example of motion in two dimensions?