If a person’s body has a density of 995 kg/m³, what fraction of the body will be submerged when floating gently in  (a) freshwater?   (b) in salt water with a density of 1027 kg/m³?

What is the stall speed at sea level of an airplane that weights 10000 lbs., has a wing area of 300ft^2, and a maximum lift coefficient of 1.4? what is the stall speed if flaps that double cl,max are applied?

Which of the following situations is impossible? a) an object has velocity directed east and acceleration directed east. b) an object has zero velocity but non-zero acceleration. c) an object has constant non-zero velocity and changing acceleration. d) an object has velocity directed east and acceleration directed west. e) an object has constant non-zero acceleration and changing velocity.

What is the relationship between the direction of motion of the balloon and the wind currents