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anonymous
 one year ago
A volleyball is thrown up in the air with initial velocity of 8.2m/s. How long does it take the ball to reach maximum height?
help please!
anonymous
 one year ago
A volleyball is thrown up in the air with initial velocity of 8.2m/s. How long does it take the ball to reach maximum height? help please!

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zephyr141
 one year ago
Best ResponseYou've already chosen the best response.1do you know the kinematic equations?

zephyr141
 one year ago
Best ResponseYou've already chosen the best response.1if you don't just google them.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0well i was given 3 to choose from. and i know im looking for the time. so im going to assume i have to use either, g=vfvi/ t or y= vi(t)+1/2 (g) (t)^2

zephyr141
 one year ago
Best ResponseYou've already chosen the best response.1\[1:d=v_0t+\frac{1}{2}at^2\]\[2:v^2=v_0^2+2ad\]\[3:v=v_0+at\]\[4:d=\frac{v_0+v}{2}t\]

zephyr141
 one year ago
Best ResponseYou've already chosen the best response.1i would use number 3.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oh then idk what i just gave you because thats like completely different but ok so how would i get t by itself

zephyr141
 one year ago
Best ResponseYou've already chosen the best response.1\[0=8.2+(9.8)t\]\[8.2=(9.8)t\]\[\frac{8.2}{9.8}=t\]\[0.84s=t\]

zephyr141
 one year ago
Best ResponseYou've already chosen the best response.1subtract 8.2 from both sides. then divide both sides by (9.8) to isolate t.

zephyr141
 one year ago
Best ResponseYou've already chosen the best response.1the first equation you gave me looks a lot like equation 4 that i gave you.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so then how do i know what the total time was that the ball was in the air?

zephyr141
 one year ago
Best ResponseYou've already chosen the best response.1well we found the time it took to get up to it's max height. assuming that nothing changes in it's descent then it should be the same amount of time on the way back down. dw:1444277213628:dw

zephyr141
 one year ago
Best ResponseYou've already chosen the best response.1so you can figure that one out. you can do it!

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0lol so i just add them then? right?

zephyr141
 one year ago
Best ResponseYou've already chosen the best response.1yep. that's the total time in flight. of course if the final resting point is any number of feet/meters or whatever measurement lesser or greater than it's original values then the problem gets a little harder.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ahhhh i got you now. thanks!

zephyr141
 one year ago
Best ResponseYou've already chosen the best response.1don't forget to medal. lol. good luck on any future problems.
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