A projectile is launched horizontally at a speed of 30m/s from a 100m tall building. how much time it will take to reach the ground?

An uplifted block of rock between two normal faults

Acharge of 8.4x10^-4 c moves at an angle of 35 degrees to a magnetic field that has a field strength of 6.7x10^-3 t. if the magnetic force is 3.5 x10 ^-2 n, how fast is the charge moving?

To do work, this truck uses energy stored in chemical fuel and an electrical battery. how much total energy does this truck put out?