The path of a ball is modelled by the quadratic function ℎ(t) = −5(t − 2)^2 + 23 where
2 answers:
Answer:
23m, at t=2s
Step-by-step explanation:
Putting the physics part aside, you can rewrite the height function as
. Now you have a fixed value, 23, and you're subtracting to it a quantity that, being a square, is at least zero. The maximum value of that sum you have when you're not subtracting anything, that is 23. That happens when
Alternatively, if you know how to determine the velocity from that kind of motion, you can find out the speed, and the highest altitude you reach when the speed is zero, which leads to a bunch of calculation for the same result.
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Answer:
Step-by-step explanation:
The value of g = 144 solved by using direct proportion.
<h3>What is a direct proportion?</h3>Direct proportion or direct variation is the relation between two quantities where the ratio of the two is equal to a constant value. It is represented by the proportional symbol, ∝.
Given that,
h = , j =
, g = 4
g ∝ hj
g = khj
where k is a constant.
4 = k××
k = 24
Also given that,
g = ? , h =2, j = 3
g = khj
g = 24×2×3
g = 144
Hence, The value of g = 144.
To learn more about direct proportion from the given link:
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