Q57. Two equal masses travel towards each other on a frictionless air track at speeds of 60 cms-1 and 30cms-1. They stick together on impact.What is the speed of the masses after impact?Physics — Forces and Motion — Question 57 of 419A. 15 cm s-1B. 30 cm s-1C. 20 cm s-1D. 45 cm s-1Practice more Physics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →