A 0.311 kg tennis racket moving 30.3 m/s east makes an elastic collision
with a 0.0570 kg ball moving 19.2 m/s
west. Find the velocity of the tennis
racket after the collision.
(Unit = m/s)

The pressure, volume, and temperature of a mole of an ideal gas are related by the equation pv = 8.31t, where p is measured in kilopascals, v in liters, and t in kelvins. use differentials to find the approximate change in the pressure if the volume increases from 14 l to 14.6 l and the temperature decreases from 375 k to 370 k. (round the answer to two decimal places.)

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

Using a pedometer, you walk 3000 steps in 20 minutes, so your speed is 150 steps/min. each of your steps is 0.7 m long. what is your speed? 150 steps/min=/s=/h