Math

QuestionA golf ball is hit at 130 ft/s at 4545^{\circ}. Find h(400)h(400) using h(x)=32x21302+xh(x)=\frac{-32 x^{2}}{130^{2}}+x. Round to two decimal places.

Studdy Solution

STEP 1

Assumptions1. The initial velocity of the golf ball is130 feet per second. . The inclination of the hit is 4545^{\circ} to the horizontal.
3. The height hh of the golf ball is given by the function h(x)=32x130+xh(x)=\frac{-32 x^{}}{130^{}}+x where xx is the horizontal distance that the golf ball has traveled.

STEP 2

We are asked to find the value of h(400)h(400). This means we need to substitute x=400x=400 into the function h(x)h(x).
h(400)=32(400)21302+400h(400)=\frac{-32 (400)^{2}}{130^{2}}+400

STEP 3

First, calculate the value of 4002400^{2}.
4002=160000400^{2} =160000So, the equation becomesh(400)=32×1600001302+400h(400)=\frac{-32 \times160000}{130^{2}}+400

STEP 4

Next, calculate the value of 1302130^{2}.
1302=16900130^{2} =16900So, the equation becomesh(400)=32×16000016900+400h(400)=\frac{-32 \times160000}{16900}+400

STEP 5

Now, calculate the value of 32×160000-32 \times160000.
32×160000=5120000-32 \times160000 = -5120000So, the equation becomesh(400)=512000016900+400h(400)=\frac{-5120000}{16900}+400

STEP 6

Calculate the value of 512000016900\frac{-5120000}{16900}.
512000016900302.96\frac{-5120000}{16900} \approx -302.96So, the equation becomesh(400)=302.96+400h(400)=-302.96+400

STEP 7

Finally, calculate the value of 302.96+400-302.96+400.
302.96+400=97.04-302.96+400 =97.04So, h(400)=97.04h(400) =97.04 feet.
This value represents the height of the golf ball when it has traveled a horizontal distance of400 feet.

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