rep surface ball drop.height bounce.height
# various balls dropped on various surfaces from various
# heights (in inches) with observed bounce heights
# Data from Michael Grewe
1  wood    base      5      2.3
1  wood    base      10     3.4
1  wood    base      15     5.1
1  wood    base      20     5.5
1  wood    golf      5      3.5
1  wood    golf      10     6.3
1  wood    golf      15     9.6
1  wood    golf      20     12.5
1  wood    wiffle    5      3.2
1  wood    wiffle    10     5.7
1  wood    wiffle    15     7.8
1  wood    wiffle    20     10.0
1  carpet  base      5      2.6
1  carpet  base      10     3.8
1  carpet  base      15     5.0
1  carpet  base      20     6.1 
1  carpet  golf      5      1.5
1  carpet  golf      10     1.6
1  carpet  golf      15     2.7
1  carpet  golf      20     1.8
1  carpet  wiffle    5      2.0
1  carpet  wiffle    10     3.5
1  carpet  wiffle    15     2.7
1  carpet  wiffle    20     4.5
1  linoleum  base      5      2.4
1  linoleum  base      10     4.2
1  linoleum  base      15     5.6
1  linoleum  base      20     7.3
1  linoleum  golf      5      3.4
1  linoleum  golf      10     5.4
1  linoleum  golf      15     7.3
1  linoleum  golf      20     9.0
1  linoleum  wiffle    5      3.2
1  linoleum  wiffle    10     5.8
1  linoleum  wiffle    15     8.4
1  linoleum  wiffle    20     10.7
2  wood    base      5      2.3
2  wood    base      10     3.6
2  wood    base      15     5.1
2  wood    base      20     6.4
2  wood    golf      5      3.8
2  wood    golf      10     6.7
2  wood    golf      15     8.6
2  wood    golf      20     11.4
2  wood    wiffle    5      2.8
2  wood    wiffle    10     5.6
2  wood    wiffle    15     8.0
2  wood    wiffle    20     10.5
2  carpet  base      5      2.7
2  carpet  base      10     3.4
2  carpet  base      15     5.0
2  carpet  base      20     6.3 
2  carpet  golf      5      1.4
2  carpet  golf      10     1.4
2  carpet  golf      15     2.1
2  carpet  golf      20     4.4
2  carpet  wiffle    5      2.4
2  carpet  wiffle    10     4.1
2  carpet  wiffle    15     3.7
2  carpet  wiffle    20     6.0
2  linoleum  base      5      2.2
2  linoleum  base      10     4.2
2  linoleum  base      15     5.9
2  linoleum  base      20     7.4
2  linoleum  golf      5      3.4
2  linoleum  golf      10     5.6
2  linoleum  golf      15     7.4
2  linoleum  golf      20     10.1
2  linoleum  wiffle    5      3.3
2  linoleum  wiffle    10     4.2
2  linoleum  wiffle    15     8.3
2  linoleum  wiffle    20     10.5