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anonymous
 one year ago
tennisball mashine shoots a ball straight up in the air, it lands after 7 seconds What's the hight of the ball given v=f(t)=3010t
i figured that the equation i got is actually the derivative of 5t^2+30t
ball shots upp with a velocity of 30m/s, is a physics mix i have no pheta angle neede to solve it in a simpler way...vertex apex
im asked: what does 30 stand for? 10t?acceleration?
and what's max height?
i have a graf with and dowsslopping linear line crossing the y axis at 30m/s and the x axis at 3 seconds
anonymous
 one year ago
tennisball mashine shoots a ball straight up in the air, it lands after 7 seconds What's the hight of the ball given v=f(t)=3010t i figured that the equation i got is actually the derivative of 5t^2+30t ball shots upp with a velocity of 30m/s, is a physics mix i have no pheta angle neede to solve it in a simpler way...vertex apex im asked: what does 30 stand for? 10t?acceleration? and what's max height? i have a graf with and dowsslopping linear line crossing the y axis at 30m/s and the x axis at 3 seconds

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok tell me V=3010t did they give you this with question

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oh ok now i can solve it

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0is the answer 35 feet

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0because you just sub 7 into original equation and you will get maximum height

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[=5(7)^{2}+30 \times 7\]

IrishBoy123
 one year ago
Best ResponseYou've already chosen the best response.0yes, for \(v(t) =30  10t\) we have 30 as initial velocity, 10 for gravity (acceleration) so as you say \(x(t) =30t  5t^2+x_0 = 5t(6t)+x_0\) but note the integration constant if it lands after t = 7, then \(\large x(7) = x_035\) !!!!! weird! is the machine 35m above gound or does the ball land in a crater?!?! anyways, at the peak of its flight \(v(t) = 0 \implies 30  10t=0, t = 3\) solve from there
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