Question

How long does it take average time interval between two drops of water hitting the
ground from 12 meters off the ground?

Answer 1

Answer:

Explanation:

Sn=u+(a/2)(2n-1) this is the formula used to compute the distance travelled by a body in the 'n'th second. By this formula we understand that a body travels a distance of x, 3x and 5x during the three time intervals in between each drop's fall i.e., each interval of 1 second.

Remember: The distances travelled for a freely falling body will be in the ratio 1:3:5:7….:2n-1 where n is the value total time (last second of flight.)

Therefore the distances will be in the ratio 1metre, 3metre, 5metre since the fourth drop is yet to fall, we only consider three drops, hence three distances.

Therefore the height of the second drop will be at a distance of 5 meters above the groud. (since the first drop is on the ground.)

The height of the third drop will be at 3+5=8 meteres above the ground.