Select all the correct answers. a free-falling golf ball strikes the ground and exerts a force on it. which sentences are true about this situation? a golf ball striking the ground is a collision. the ground exerts an equal force on the golf ball. the ground doesn’t exert a force on the golf ball. the force is zero because the golf ball has little mass.

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?