A Roller Coaster in an Amusement Park First Goes Up $\circ$

question 20

Multiple Choice

A roller coaster in an amusement park first goes up an incline of length 70 m and at an angle of 38 ^$\circ$ to the horizontal.It then goes straight along the horizontal for 20 m.It finally goes down a 30 m long ramp with an angle of 60 ^$\circ$ relative to the horizontal.What is the displacement of the roller coaster at that point relative to its starting point? (Hint: Notation: (x,y) ;It really helps to make a drawing here.)

• A)(90 m,17 m)
• B)(120 m,0 m)
• C)(120 m,17 m)
• D)(90 m,0 m)
• E)(120m,69m)

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