A ball always bounces three fifth of the height from which it falls. What fraction of its initial height does it rise after the second and third bounce?
huh? think a little
1st bounce: 3/5
2nd bounce: 3/5 * 3/5
3rd bounce: 3/5 * 3/5 * 3/5
...
1st bounce: 3/5
2nd bounce: 3/5 * 3/5
3rd bounce: 3/5 * 3/5 * 3/5
...