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Find a Rectangular Equation for the Plane Curve Defined by the Parametric

Question 9

Multiple Choice

Find a rectangular equation for the plane curve defined by the parametric equations.
-A baseball pitcher throws a baseball with an initial speed of 140 feet per second at an angle of 20° to the horizontal. The ball leaves the pitcher's hand at a height of 5 feet. Find parametric equations that describe the motion of the ball as a function of time. How long is the ball in the air? When is the ball at its maximum height?
What is the maximum height of the ball? A) x=124.04tx = 124.04 t and y=16t2+45.14t+5y = - 16 t ^ { 2 } + 45.14 t + 5
5.856sec,1.411sec5.856 \mathrm { sec } , 1.411 \mathrm { sec } ,
31.83831.838 feet

B) x=124.04tx = 124.04 t and y=16t2+45.14t+5y = - 16 t ^ { 2 } + 45.14 t + 5
5.412sec,1.411sec5.412 \mathrm { sec } , 1.411 \mathrm { sec } ,
259.702259.702 feet

C) x=124.04tx = 124.04 t and y=16t2+45.14t+5y = - 16 t ^ { 2 } + 45.14 t + 5
2.706sec,1.411sec2.706 \mathrm { sec } , 1.411 \mathrm { sec } ,
4.994.99 feet

D) x=131.56tx = 131.56 \mathrm { t } and y=16t2+47.88t+5\mathrm { y } = - 16 \mathrm { t } ^ { 2 } + 47.88 \mathrm { t } + 5
3.094sec,1.496sec3.094 \mathrm { sec } , 1.496 \mathrm { sec } ,
40.8240.82 feet

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