Determine the coefficient of restitution e for a steel ball dropped from rest at a height h = 2.41 m above a heavy horizontal steel plate if the height of the second rebound is h2 = 0.82 m.

For such cases where frictional forces can be neglected,  and the object is dropped from rest onto a horizontal surface, coefficient of restitution is equivalent to:

e =  √(h/H)

where,

h = bounce height

H = drop height

so, using the formula we get:

e =  √(0.82/2.4)

Hence, e = 0.583 

because it says use -2,0,and 2 for x, we can plug those numbers into the equation. y/4=3/4(-2)+2   y/4= -1 1/2 +2 now to get x by itself, we can multiply each side by 4. y=-6+8 which equals y=2 when x=-2. now you can do the same thing with 0 and 2 as x. you get y=8 when x=0 and y=14 when x=2.

x   |   y

-2 |   2

0   |   8

2   |   14