A stone is thrown upwards from the edge of a cliff with a speed of 5.0 ms. It hits the ground 2.0 s later. What is the height of the cliff?

If you can provide some explanation I will greatly appreciate it.

Foreshadowing. the prologue states that this is the story of "star-crossed lovers." there are four strong foreshadowings of evil in act 1. identify at least two foreshadowings and explain their purpose.

Two steel balls, each of mass m, are welded to a light rod of length l and negligible mass and are initially at rest on a smooth horizontal surface. a horizontal force of magnitude f is suddenly applied to the rod as shown. determine (a) the instantaneous acceleration a of the mass center g and (b) the corresponding rate at which the angular velocity of the assembly about g is changing with time.

How much work would it take to move a coulomb charge across a 4 volt potential difference?