SOLUTION: A soccer ball is kicked in the air from the stadium. The height, h, in feet, of the ball can be modeled by the equation h = -16t2 + 34t + 15 where t is the time in seconds. When wi
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Question 1181972: A soccer ball is kicked in the air from the stadium. The height, h, in feet, of the ball can be modeled by the equation h = -16t2 + 34t + 15 where t is the time in seconds. When will the ball hit the ground?
Found 2 solutions by Boreal, MathLover1:
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
h(t)=-16t^2+34t+15
set it equal to 0, the ground.
may rewrite as
16t^2-34t-15=0, multiplying by -1
t=(1/32)(34+/-sqrt(2116))
=(1/32)(80), only positive root of 2.5 seconds.
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
the ball will hit the ground when
....factor
solutions:
if =>=>
if =>=>-> disregard negative time
the ball will hit the ground after seconds
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