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allie_bear22
 2 years ago
The height in meters of a projectile can be modeled by h = 4.9t^2 + vt + s where t is the time (in seconds) the object has been in the air, v is the initial velocity (in meters per seconds) and s is the initial height (in meters). A soccer ball is kicked upward from the ground and flies through the air with an initial vertical velocity of 4.9 meters per second. After how many seconds does it land approximately?
allie_bear22
 2 years ago
The height in meters of a projectile can be modeled by h = 4.9t^2 + vt + s where t is the time (in seconds) the object has been in the air, v is the initial velocity (in meters per seconds) and s is the initial height (in meters). A soccer ball is kicked upward from the ground and flies through the air with an initial vertical velocity of 4.9 meters per second. After how many seconds does it land approximately?

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terenzreignz
 2 years ago
Best ResponseYou've already chosen the best response.1When it lands, what height does it have?

terenzreignz
 2 years ago
Best ResponseYou've already chosen the best response.1Wrong way to phrase it... Let me rephrase.... How high is the ball when it lands?

terenzreignz
 2 years ago
Best ResponseYou've already chosen the best response.1When it lands, is it 4.9 meters above the ground?

allie_bear22
 2 years ago
Best ResponseYou've already chosen the best response.0what do i have to do to get the answer?

terenzreignz
 2 years ago
Best ResponseYou've already chosen the best response.1Start with that... find the height of the ball as soon as it lands. It just takes a little intuition and visualization :)

terenzreignz
 2 years ago
Best ResponseYou've already chosen the best response.1So... when the ball lands, it is 16 meters underground?

terenzreignz
 2 years ago
Best ResponseYou've already chosen the best response.116 means when the ball lands, it is 16 meters above the ground (in midair). Does that seem reasonable?

terenzreignz
 2 years ago
Best ResponseYou've already chosen the best response.1Then... what is reasonable? When the ball lands, its height is...?

allie_bear22
 2 years ago
Best ResponseYou've already chosen the best response.0didnt mean to put tht srry

terenzreignz
 2 years ago
Best ResponseYou've already chosen the best response.1Well... you mean to tell me that when the ball *lands* it is 5 meters above the ground, then?

allie_bear22
 2 years ago
Best ResponseYou've already chosen the best response.0omg!! i really dont kno

terenzreignz
 2 years ago
Best ResponseYou've already chosen the best response.1Think... meditate... :P Now... how high is the ball when it LANDS... how many meters above the ground is the ball when it LANDS...

allie_bear22
 2 years ago
Best ResponseYou've already chosen the best response.0yay!!!! that was easy lol

terenzreignz
 2 years ago
Best ResponseYou've already chosen the best response.1Of course, when the ball lands, it is on the ground. Thus, it is 0 meters above the ground.

terenzreignz
 2 years ago
Best ResponseYou've already chosen the best response.10 is not the answer. .

terenzreignz
 2 years ago
Best ResponseYou've already chosen the best response.1that's just a stepping stone...

terenzreignz
 2 years ago
Best ResponseYou've already chosen the best response.1We need v and s. We already have v, the initial velocity, 4.9

terenzreignz
 2 years ago
Best ResponseYou've already chosen the best response.1What's the initial height (s) ?

terenzreignz
 2 years ago
Best ResponseYou've already chosen the best response.1Are you guessing? I strongly advise against it... it's too risky.

terenzreignz
 2 years ago
Best ResponseYou've already chosen the best response.1And no, the initial height is not \(\ 4.9^2\)

allie_bear22
 2 years ago
Best ResponseYou've already chosen the best response.0ok thnx for your help ill do the rest by myself :) thnx

terenzreignz
 2 years ago
Best ResponseYou've already chosen the best response.1Are you sure? Well, if you're sure, post your answer here.
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