Homework Help: maths lit

Posted by senzo on Thursday, January 31, 2013 at 9:40am.

a ball is dropped from a height of 2r1/3 meters. It bounces to 3/4 of the height from which it fell at each boune.
A) determine the height the ball reaches after one bounce.
B) how many bounces does it take to bounce less than 1 meter high??

maths lit - Steve, Thursday, January 31, 2013 at 10:03am
I assume you mean that each bounce is 3/4 the height of the previous one.

3/4 * 7/3 = 7/4

The nth bounce is
Bn = 28/9 * (3/4)^n

Bn < 1: n >= 4
maths lit - Angelica, Friday, February 8, 2013 at 3:27am
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