Acrate having mass 50.0 kg falls horizontally off the back of the flatbed truck, which is traveling at 100 km/h. find the value of the coefficient of kinetic friction between the road and crate if the crate slides 50 m on the road in coming to rest. the initial speed of the crate is the same as the truck, 100 km/h.

Adiver named jacques observes a bubble of air rising from the bottom of a lake (where the absolute pressure is 3.50 atm) to the surface (where the pressure is 1.00 atm). the temperature at the bottom is 4.00 ∘c, and the temperature at the surface is 23.0 ∘c. what is the ratio of the volume of the bubble as it reaches the surface (vs) to its volume at the bottom (vb)? if jaques were to hold his breath the air in his lungs would be kept at a constant temperature. would it be safe for jacques to hold his breath while ascending from the bottom of the lake to the surface?