Q1. A conveyor belt at a quarry lifts 2,000 kg of sand per minute up a vertical distance of 12 meters. The sand is at first at rest, then moves at a speed of 0.20 m/s along conveyor belt. What is the instantaneous power generated by this machine?
Q2. An airplane is flying horizontally with the speed of 1300km/h when an engine falls off. Neglect air resistance; imagine it takes 25 s for the engine to hit the ground.
a) What is the altitude of the plane?
b) What is the horizontal distance the airplane engine falls?