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anonymous
 one year ago
A ball is dropped from a tower 550 meters above the ground with position function s(t) = 4.9t2+ 550.
What is the velocity of the ball after 3 seconds
What is the velocity of the ball after 3 seconds
anonymous
 one year ago
A ball is dropped from a tower 550 meters above the ground with position function s(t) = 4.9t2+ 550. What is the velocity of the ball after 3 seconds What is the velocity of the ball after 3 seconds

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dan815
 one year ago
Best ResponseYou've already chosen the best response.1did u mean to ask what is the distance after 3 seconds because right now its asking the same question twice

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0no just velocity. that second one was an accident

dan815
 one year ago
Best ResponseYou've already chosen the best response.1remember that velocity = change in displacement / time

dan815
 one year ago
Best ResponseYou've already chosen the best response.1derivative of a function tells you the slope of that function wrt to time everywhere

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yeah I just get confused with what comes after S(t)

dan815
 one year ago
Best ResponseYou've already chosen the best response.1you know that gravity is 9.8m/s^2 right

dan815
 one year ago
Best ResponseYou've already chosen the best response.1if u look carefully this equation models that

dan815
 one year ago
Best ResponseYou've already chosen the best response.1if u differentiate twice s'(t)=2*4.9*t s''(t) = 2*4.9=9.8

dan815
 one year ago
Best ResponseYou've already chosen the best response.1accerlation is the 2nd derivative of s(t) function

dan815
 one year ago
Best ResponseYou've already chosen the best response.1acceleration is how velocity change wrt to time so its the slope of the velocity function velocity is how displamenet changes wrt to time so its the slope of the distance function

dan815
 one year ago
Best ResponseYou've already chosen the best response.1the units also tell you for example 9.8 m/s^2 = 9.8 m/s /s the units m/s /s

dan815
 one year ago
Best ResponseYou've already chosen the best response.1change in speed or velocity / second

dan815
 one year ago
Best ResponseYou've already chosen the best response.1just one thing i think is a bit akward here is that they didnt put a  sign infront of your equation

dan815
 one year ago
Best ResponseYou've already chosen the best response.1so i guess position velocity in your case really means downward towards earth

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yeah I noticed that to but I figured it was a typo or something
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