Q1. A flight attendant pulls her 70.0 N flight bag a distance of 274 m along a level airport floor at a constant speed. The force she exerts is 38.0 N at an angle of 57.0° above the horizontal Find the work she does on the flight bag.
(b) Find work completed by the force of friction on the flight bag.
(c) Find coefficient of kinetic friction between the flight bag and the floor
Q2. A stream of water strikes a stationary turbine blade horizontally. The incident stream has a velocity of +16m/s whilst the exit has a velocity of -16m/s. mass of water per second that strikes the blade is 30kg/s.find the magnitude of average force exerted on water by the blades.