1.12 When a bicycle rider is traveling at a speed of V = 24 mph, the power P she needs to supply is given by P = FV, where F = 5 lbf is the force necessary to overcome aerody- namic drag. Apply the grid method to calculate: a. power in watts. b. energy in food calories to ride for 1 hour.

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Properties of Fluids

The term fluid represents a type of substance that can easily change its shape under any external pressure/force and can flow. Fluids can acquire any shape in which it is stored and can resist normal stresses but cannot resist shear stress in rest condition. Whenever external shear stress is applied to fluids, it starts to flow. The fluids may be liquid or gas. Example- water, air, etc.