Question

a body dropped from top of Tower cover a distance 7x in the last second of its journey where X is the distance cover in the first second how much time does it take to reach the ground

Answer 1

0-x=1s

x-3x=2s

3x-5x=3s

5x-7x=4s

answer is 4s

Answer 2

A body dropped from top of Tower cover a distance 7x in the last second of its journey where X is the distance cover in the first second how much time does it take to reach the ground

In the 1st quarter of the journey the body travels at:

h(1)=g/2 (1)²

which is, 4.9 meter.

In the last second the body will fall at 4.9*7 = or 34.3 meters.

h(t)-h(t-1)=34.3

g/2 t² - (g/2 (t-1)²)=34.3

4.9t² - (4.9(t²-2t+1)=34.3

9.8t-4.9=34.3