h(t)=-16t^2+32+20 how many seconds till it touches the ground.
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Answer:
t = 2.5 seconds.
Step-by-step explanation:
When the orange reches the grounf gh will = 0. so:
-16t^2+32t+20 = 0
-4(4t^2 - 8t - 5) = 0
-4(2t - 5)(2t + 1) = 0
t = 2.5, -0.5.
t = 2.5 seconds.
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