Acar accelerates at 4m/s² and it starts from rest, how much time does it need to accelerate to a speed of 24m/s?

Why do astronauts in the space shuttle weigh less?

Aforce of 100 newtons is used to move an object a distance of 15 meters with a power of 50 watts. find the work dine and the time it takes to do the work

(a) if the pressure in gas is doubled while its volume is held constant, by what factor do (i) vrms and (ii) change? (b) is it possible to boil water at room temperature (20oc) without heating it? explain.