Friday

February 27, 2015

February 27, 2015

Posted by **Melissa** on Saturday, December 17, 2011 at 12:50am.

- math -
**Steve**, Saturday, December 17, 2011 at 6:15amThis is just finding the sum of the sum of the series

-3 + 6*.6 + 6*.6*.6 + ...

We subtract off the 3 because the ball didn't start from the ground, so its first hop is only the downward part.

a = 6

r = 0.6

S5 = 6 (1-.6^5)/(1-.6)

= 6(2.3056) = 13.8336

S5 - 3 = 10.8336

Check: 3 + 3.6 + 2.16 + 1.296 + 0.7776 = 10.8336

- math -
**Anonymous**, Saturday, September 6, 2014 at 10:42ama ball is droped from a height of 30m above level ground. After each bounce it rises to three quarters of the height from which it fell. find,to the nearest metre, the total distance it has travelled when it strikes the ground for the 7th times

**Answer this Question**

**Related Questions**

math - the height that a ball bounces varies directly as the height from which ...

5th grade math - On each bounce a ball reaches 4/5 of the height of its previous...

math - a ball is dropped from a height of 5m. after each bounce, the ball rises ...

science - Science Experiment Determine a mathematical modelwhich describes the ...

physics - A superball is dropped from rest from a height of 2.0m. It bounces ...

physics - A superball is dropped from rest from a height of 2.0m. It bounces ...

11 - A ball is dropped vertically from height of 30 meters after bounces.The ...

Math- Check over please - A ball is dropped from a height of 3m and bounces on ...

maths lit - a ball is dropped from a height of 2r1/3 meters. It bounces to 3/4 ...

math - Fay's rubber ball bounces exactly half the height from which it is ...