What measures the mount of displacement in a longitudinal esbelta?

Why is there friction between objects

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.)

What is the acceleration of a spaceship that is initially at rest and then speeds up to 220 m/s in 20 seconds