120 = -16 t^2 + 96 t + 12
0 = -4 t^2 + 24 t - 27
use quadratic formula to find t
If an object is propelled upward from a height of s feet at an initial velocity of v feet per second, then its height h after t seconds is given by the equation hequals
minus16t squaredplusvtpluss,
where h is in feet. If the object is propelled from a height of 12
feet with an initial velocity of 96
feet per second, its height h is given by the equation hequals
minus16t squaredplus96tplus12
.
After how many seconds is the height 120
feet?
The time is nothing
seconds.
1 answer
1 answer