A rock is thrown horizontally from a bridge with a velocity of 5 m/s at an angle of 0 degrees. It hits the water below in 2.2 seconds. The range (horizontal displacement) of this rock is:
meters

The height (vertical displacement) of the bridge is:
meters

The vertical velocity of the rock just before hitting the water is:
meters/second

Atrain departs from its station at a constant acceleration of 5 m/s. what is the speed of the train at the end of 20s?

Electromagnetic induction. a coil of wire contains n turns and has an electrical resistance r. the radius of each turn is a. initially, inside the coil there exists a uniform magnetic field of magnitude b0 parallel to the axis of the coil. the magnetic field is then reduced slowly. the current induced in the coil is i. how long does it take for the magnitude of the uniform field to drop to zero?

Why does lightning travel from clouds to the ground?