Q1. A flight attendant pulls her 66 N flight bag a distance of 381 m along a level airport floor at a constant velocity. The force she exerts is 35 N at the angle of 55° above the horizontal.
Find the coefficient of kinetic friction between flight bag and floor.
Q2. An asteroid is discovered heading straight toward Earth at 13km/s. An international team manages to attach a giant rocket engine to the asteroid. The rocket fires for 10 mins, after which the asteroid is moving at 28 degrees to its original path at a speed of 20 km/h/ Find its average acceleration.