Airplane a travels 1400 km at a certain speed. plane b travels 1000 km at a speed 50 km divided by h faster than plane a in 3 hrs less time. find the speed of each plane.

The man of mass m1 and the woman of mass m2 are standing on opposite ends of the platform of mass m0 which moves with negligible friction and is initially at rest with s = 0. the man and woman begin to approach each other. derive an expression for the displacement s of the platform when the two meet in terms of the displacement x1 of the man relative to the platform.

Which describes increasing the efficiency of energy resource

Difference between natural and artifical magnet