You ride your bike for 1.5 h at an average velocity of 8 km/h, then for 30 min at 19 km/h. what is your average velocity?

According to newton’s first law of motion, which force is expected to cause a body to accelerate?

You have a pick-up truck that weighed 4,000 pounds when it was new. you are modifying it to increase its ground clearance. when you are finished

(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.