Ricardo starts from rest and runs for 12 seconds. He reaches a final velocity of +9 m/s. Find Ricardo’s acceleration.

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

If we relied solely on the nonrenewable resources found in the u.s., which one would we run out of first at current usage levels? a. natural gas b. oil c. uranium d. coal

What is the weight of a feather (mass = 0.0001 kg) that floats through earth's and the moon's atmospheres?