A truck of mass 1200kg is moving with a speed of 7ms^(-1) when it collides with a second truck of mass 1600kg which is stationary. If the two trucks are automatically coupled together on impact, the speed with which combination moves is

A truck of mass 1200kg is moving with a speed of 7ms^(-1) when it coll

1.	A truck of mass 1200kg is moving with a speed of 7ms^(-1) when it collides with a second truck of mass 1600kg which is stationary. If the two trucks are automatically coupled together on impact, the speed with which combination moves is
Answer» 2 m/s 3 m/s 1.5 m/s 6 m/s Answer :B