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IceJOKER [234]
3 years ago
10

Tom throws a ball into the air.

Mathematics
1 answer:
hram777 [196]3 years ago
6 0
<span>h = -8t² + 40t

dh/dt = 0
⇒ d/dt(</span><span>-8t² + 40t) = 0
⇒ -16t + 40 = 0
⇒ 16t = 40
⇒ t = 40/16 = 2.5s

So it takes 2.5 seconds to reach highest point

h = -8×2.5² + 40×2.5 = -50 + 100 = 50
Ordered pair: (h,t) = (50,2.5)
</span>
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