Question

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. Find the velocity when t = 1.

Answer 1

do you know that velocity is the first derivative of position?

Answer 2

v = 42-32t ; and t=1

Answer 3

it won't take that as a response?

Answer 4

nevermind, i plugged in 1 to get 10.

Answer 5

thank you!