In this elastic collision two bowling balls each of mass 5.0 kg travel in opposite directions toward each other. Ball A has a velocity of 2.0 m/s and Ball B has a velocity -5.0 m/s. If after the collision Ball B has a velocity of -1.0 m/s, what is the velocity of Ball A after the collision? -2 m/s 1 m/s -3 m/s 2 m/s What is the impulse on a 2000 kg truck whose velocity changes from 0 m/s to 19.5 m/s? 19,500 N-s 39,000 N-s 2,000 kg 39,000 N A 70 g arrow is shot into a 250 g apple in an inelastic collision. If the arrow's velocity is 55 m/s before the collision, what is the velocity of the arrow-apple mass after the collision? 55.1 m/s 15.4 m/s 12.03 m/s 24.1 m/s A car travels with a velocity of 50 kph (km/h). Its momentum is 2 x 104 kg.m/s. What is the mass of the car? 1267 kg 1735 kg 1349 kg 1439 kg