Physics (Helps pls)

Question

A flower pot falls from a ledge of a window building. the ledge is 80m high. How long will it take the pot to hit the ground?

Answer 1

Hi! This is a free fall problem.

Using the equations of motion for uniform acceleration:

(i) v = u + at

(ii) s = ut + at²/2

where v is the final velocity, u the initial velocity (zero in this case), and a the gravity acceleration, and s the displacement (that in this case is 80m).

Using the second equation (ii):

80 = 0 + 9.8t²/2

Isolating t:

t² = 2*80/9.8

t = 4.04 seconds.

And you can find the final velocity 'v' if you substitute t in the first equation (i).