A ball was thrown directly upward and returned to the hand after 2.0 s. what was the velocity of the ball just before it returned to the hand?

Gunpowder residue is most likely to show up where on a shooters hands

What determines the amount of inertia an object has

6–43 a food department is kept at 2128c by a refrigerator in an environment at 308c. the total heat gain to the food department is estimated to be 3300 kj/h and the heat rejection in the condenser is 4800 kj/h. determine the power input to the compressor, in kw and the cop of the refrigerator.