Calculate the mass of the ball using PE = m × g × h. (Hint: Rearrange the formula to solve for m.) A ball held 2.0 meters above the floor has 59 joules of potential energy. The ball’s mass is about
kilograms.
(Use g = 9.8 N/kg.)

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Agas initially at p1 = 1 bar and occupying a volume of 0.5 liter is compressed within a piston–cylinder assembly to a final pressure p2 = 4 bar. (a) if the relationship between pressure and volume during the compression is pv = constant, determine the volume, in liters, at a pressure of 3 bar. (b) repeat for a linear pressure–volume relationship between the same end states. reference

In order to do work, the force vector must be question 1 options: in a different direction than the acceleration vector. in a different direction than the displacement vector. in the same direction as the displacement vector and the motion. in the same direction as the acceleration vector.