A roller coaster moves 85 m horizontally, then travels 45 m at an angle of 30° above
the horizontal. What is its displacement from its starting point. Use graphical techniques

Question

A roller coaster moves 85 m horizontally, then travels 45 m at an angle of 30° above
the horizontal. What is its displacement from its starting point. Use graphical techniques

anonymous · Answer

There will be two displacements one vertical displacement and another horizontal displacement ,
vertical displacement=22.5m and horizontal displacement=123.97m.
|dw:1416497337456:dw|

anonymous · Answer

Agree with yuvraj77's methodology, but the horizontal displacement of cos(30)*45 is 38.97m, which, when added to 65m, equals 103.97m.

anonymous · Answer

dude its 85 and not 65

anonymous · Answer

Whoops. You are correct.

anonymous · Answer

its ok

anonymous · Answer

|dw:1417963552647:dw|you have broken the actual displacement into its components but the question is asking about net displacement which is ((
45sin30)^2+(85+45cos30)^2)^1/2m. therefore net displacement is ((45sin30)^2+(85+45cos30)^2)^1/2