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sergij07 [2.7K]
4 years ago
9

If a ball is thrown into the air with a velocity of 42 ft/s, its height (in feet) after t seconds is given by y = 42t − 16t2. Fi

nd the velocity when t = 1.
Mathematics
2 answers:
horrorfan [7]4 years ago
5 0
I'm pretty sure its 10
Zarrin [17]4 years ago
3 0
Velocity is found using the first derivitive, y'=42-32t 
evaluating this as t=1 gives the velocity after 1 second which is 10ft.
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