https://www.mathxl.com/Student/playerTest aspx?testld 621207 yes Test Exam 1 Thi

Question

https://www.mathxl.com/Student/playerTest aspx?testld 621207 yes Test Exam 1 This Question: 1 pt ion A golfer launches a tee shot down a horizontal fairway and a follows a path given by roy-(at. (85-0.1ax.-5 +6 where t20 me determines how much the shot deviates from a straight path down the fairway. a. With no slice (a sketch and describe the shot. How far does the ball travel horizontally (the distance between the point the ball tu c. With slice (a 0.2), sketch and describe the shot. How far does the ball travel horizontally (along axis)? How far does the ball travel horizontaly (along the yaxis) with a 25? ra a. Choose the correct graph below. ha O A. O B. The ball travels horizontally feet. (Round to two decimal places as needed.) b. Choose the correct graph below. O B. The ball travels horizontally feet. (Round to two decimal places as needed.) c. The ball travels horizontally feet (Round to two decimal places as needed.) t Click to select your answers).

Explanation / Answer

a)b is correct

because r(t)=(at,(85-0.1a)t,-5t^2+60t)

      at a=0,r(t)=(0,85t,-5t^2+60t)

at t=o,r(t)=(0,85,55)

long y-axis,x=0 and z=0

so,t=0 or -5t^2+60t=0i.e t=12

y=0 or y=85*12=1020

b) answer is a)

along y-axis,x=0and z=0

and a=0.2

so,t=0 or t=12

y=0 0r y=(85-0.1*0.2)*12=1019.76

c)the ball travels horizontally i.e x=0,z=0

a=2.5

so t=0 or t=12

y=0 or y=(85-0.1*2.5)t

             =(85-0.1*2.5)12

              =1017

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