A rock is kicked horizontally at a speed of 16 m/s from the edge of a cliff. The rock strikes the ground 65 m from the foot of the cliff of height H
Neglect air resistance.

a) How long is the rock in the air?

b) What is the approximate value of H, the height of the cliff?

if the forces acting on an object are unbalanced, the object will accelerate in the direction of the net force on the object.

explanation:

this is best explained by having an understanding of newton's second law, which states that f=ma. you see, when the forces are unbalanced, net force (sum of all forces) is not zero. therefore making it necessary for the object to have an acceleration in the direction of the net force.

the only real purpose of sputnik 1 was to beat the us into space. we were getting close to launching a useful satellite, explorer 1 - which launched on january 31, 1958. the ussr had to beat that, so they launched sputnik 1 on october 4, 19