A person kicks a rock off a cliff horizontally with a speed of 20 m/s. It takes 7.0 seconds to hit the ground. The height of the cliff is _ m

final vertical velocity is _ m/s

the final horizontal velocity is _ m/s

final speed vf = _ m/s

range (How far it goes) _ m

Answerthe energy required is 1.60 × 10⁻¹⁸ j, to three significant figures.explanationwe define electric potential as the ratio electric potential energy to the charge,    then the following gives us the potential difference,      the formula  may be on your formula sheet.the change in electric potential energy would be the energy that would needed to move it from point a to point b. solving for that, we get    using q = 8.00  × 10⁻¹⁹ c and  δv = 2.00 v, we get    the energy required is 1.60 × 10⁻¹⁸ j, to three significant figures.

The upward force acting on the wing of a airplane in flight is known as the "lift" force. (d)

The geological theory that states that pieces of earth's lithosphere are in constant slow motion is the theory of plate tectonics.