Aball is thrown horizontally from the top of a 60.0-m building and lands 100.0 m from the base of the building. ignore air resistance.

(a) how long is the ball in the air?
(b) what must have been the initial horizontal component of the velocity?
(c) what is the vertical component of the velocity just before the ball hits the ground?
(d) what is the velocity (including both the horizontal and vertical components) of the ball just before it hits the ground?

Explanation:

Given

height of building (h)=60 m

Range of ball=100 m

(a)time travel to cover a vertical distance of 60 m

t=3.49 s

(b)To cover a range of 100 m

R=ut

(c)vertical component of velocity just before it hits the ground

(d)

answer: option c. i.e. electric current flowing “downhill” from the negative electrode to the positive electrode in a battery

explanation:

the water analogy to the circuits define the pipes (water flows) to the electric current. now, we know that the electric current flows from the positive terminal to the circuit (as shown in the diagram attached).

hence, option c is the correct answer.

im sorry i dont know