A `10kg` ball and a `20kg` ball approach each other with velocities `20m//s` and `10m//s` respectively. What are their velocities after collision, if the collision is perfectly elastic ?

A 10kg ball and 20kg ball approach each other with velocities 20ms^(-1) and 10ms^(-1) respectively. What are their velocities after collision if the collision is perfectly elastic?

A 10 kg ball and 20 kg ball approach each other with velocities 20 ms^(-1) and 10 ms^(-1) respectively . What are their velocities after collision if the collision is perfectly elastic ?

Two balls of masses 10 kg and 20 kg approach each other with velocities 30 m/s and 20 m/s respectively . Calculate their velocities after they undergo a perfectly eleastic collision .

Two balls of equal masses movin with velocities 10m/s and -7m/s respectively collide elatically. There velocities after collision with be

Two perfectly elastic particles A and B of equal masses travelling along a line joining them with velocities 15 m//s and 10m//s respectively collide. Their velocities after the elastic collision will be (in m/s) respectively

Two perfectly elastic particles A and B of equal masses travelling along a line joining them with velocities 15 m//s and 10m//s respectively collide. Their velocities after the elastic collision will be (in m/s) respectively

Two perfectly elastic particles A and B of equal masses travelling along a line joining them with velocities 15 m//s and 10m//s respectively collide. Their velocities after the elastic collision will be (in m/s) respectively

Two steel balls A and B of mass 10 kg and 10 g rolls towards each other with 5 m/s and 1 m/s respectively on a smooth floor. After collision, with what speed B moves (perfectly elastic collision)?

Two steel balls A and B of mass 10 kg and 10 g rolls towards each other with 5m/s and 1 m/s respectively on a smooth floor. After collision, with what speed B moves [perfectly elastic collision]?