A 55 gallon barrel weighs 27 lb empty. What does it weigh full of oil that has specific gravity 0.895?
A 5/16 in diameter coarse thread bolt has 18 threads to the inch parallel to the bolt axis. If the nut is turned 1/4 of a turn, how much axial motion does it make?
A gun fires a bullet at 685 mph. What is the bullet's maximum range, the farthest horizontal distance it can travel? (is this something about air resistance? like ignore vertical displacement?)