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Category > Engineering Posted 01 May 2017 My Price 2.00

A roller-coaster reaches a velocity of 20 m/s

A roller-coaster reaches a velocity of 20 m/s at a location where the radius of curvature is 40 m. Calculate the acceleration, in m/s2.

 

a) 8                         b) 9                        c) 10                       d) 12

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Alpha Geek
(8)
Status NEW Posted 01 May 2017 10:05 AM My Price 2.00

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file 1493633240-answer1.docx preview (53 words )
A----------- ro-----------lle-----------r-c-----------oas-----------ter----------- re-----------ach-----------es -----------a v-----------elo-----------cit-----------y o-----------f 2-----------0 m-----------/s -----------at -----------a l-----------oca-----------tio-----------n w-----------her-----------e t-----------he -----------rad-----------ius----------- of----------- cu-----------rva-----------tur-----------e i-----------s 4-----------0 m-----------. C-----------alc-----------ula-----------te -----------the----------- ac-----------cel-----------era-----------tio-----------n, -----------in -----------m/s-----------2. ----------- a)----------- 8 ----------- Â----------- Â ----------- Â----------- Â ----------- Â----------- Â ----------- Â----------- Â ----------- Â----------- Â ----------- Â----------- Â ----------- Â----------- Â ----------- Â-----------  b-----------) 9-----------  ----------- Â----------- Â ----------- Â----------- Â ----------- Â----------- Â ----------- Â----------- Â ----------- Â----------- Â ----------- Â----------- Â ----------- Â----------- Â ----------- c)----------- 10-----------  ----------- Â----------- Â ----------- Â----------- Â ----------- Â----------- Â ----------- Â----------- Â ----------- Â----------- Â ----------- Â----------- Â ----------- Â-----------  d-----------) 1-----------2 -----------Ans-----------wer----------- C-----------orr-----------ect----------- op-----------tio-----------n: ----------- c-----------) 1-----------0 T-----------he -----------acc-----------ele-----------rat-----------ion----------- of----------- a -----------bod-----------y m-----------ovi-----------ng -----------in -----------cur-----------ved----------- pa-----------th -----------is -----------giv-----------en -----------by -----------thi-----------s f-----------orm-----------ula----------- \(-----------a={-----------V^2-----------\ov-----------er -----------R} ----------- -----------
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