A ball is launched horizontally from a wall of height 1.8 m with an unknown initial velocity. It lands 4.5 meters from the wall. a) what is the initial velocity of the ball in the y direction?

b) how long does it take, in seconds, for the ball to hit the ground?

A ball is launched horizontally from a wall of height 1.8 m with an unknown initial velocity. It lands 4.5 meters from the wall.

c) What was the initial velocity of the ball?

What is the weight of a 8-kg substance in n, kn, kg·m/s2, kgf, lbm·ft/s2, and lbf?

Which word expression describes how much to calculate pressure

1which body contains the majority of the mass in the solar system earth jupiter the moon the sun 2 what keeps the objects in the solar system such as planets orbiting around the sun the force of gravity the galaxy exerts on all objects within it including the solar system the great distance between the sun and the planets the sun's nuclear fusion which acts on each object the gravitational force between the sun and each object in the solar system