[" 18.Two particles are "100m" apart and start approaching each "],[" other with constant velocities of "2m/s" and "3m/s" .The "],[" particles will meet after "]

Two particles are 100 m apart and start approaching each other with constant velocities of 2 m//s and 3 m//s . The particles will meet after.

Two particles are intially at a separation of d to each other. They move with constant velocirties with 5m//s and 3m//s respectively in horizontal plane. Their velocities makes an angle 60^(@) with each other. If after 2 seconds, they collide. Then value of d is:

Two particles are intially at a separation of d to each other. They move with constant velocirties with 5m//s and 3m//s respectively in horizontal plane. Their velocities makes an angle 60^(@) with each other. If after 2 seconds, they collide. Then value of d is:

Two particles of masses m and 3m approach each other with different velocities. After collision, the particle of mass m has velocity vec( v) in their centre of mass frame. Velocity of particle of mass 3m in the centre of mass frame is

Two particles of masses m and 3m approach each other with different velocities. After collision, the particle of mass m has velocity vec( v) in their centre of mass frame. Velocity of particle of mass 3m in the centre of mass frame is

Two trains are 2 km apart and their lengths are 200 m and 300 m. They are approaching towards each other with a speed of 20 m/s and 30 m/s, respectively. After how much time will they cross each other?

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 .