algebra1 HELP PLEASE Thanks you!!
posted by lisa on .
wo identical rubber balls are dropped from different heights. Ball 1 is dropped from a height of 100 feet, and ball 2 is dropped from a height of 210 feet. Write a function for the height of each ball.
When does ball 1 reach the ground? Round to the nearest hundredth. _____seconds
When does ball 2 reach the ground? Round to the nearest hundredth. _____seconds
h1(t) = -16t^2 + 100
h2(t) = -16t^2 + 210
when ball 1 reaches ground, h1(t) = 0
16t^2 = 100
t^2 = 100/16
t = √(100/16) = 10/4 = 5/2 seconds
do the 2nd the same way
Had no idea that Lisa had asked this question several times before and had shown no sign of effort.
(I started answering top down)
If her guile and persistence have helped her learn the material, it has worked out ok.