How much time elapses and how far vehicle moves
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How much time elapses and how far vehicle moves

[From: ] [author: ] [Date: 11-09-11] [Hit: ]
a) 20.(15/2.3)+(15/1.b)302.(15*(15/2.3))+(15*(15/1.......
An electric vehicle starts from rest and accelerates at a rate of 2.3 m/s2 in a straight line until it reaches a speed of 15 m/s. The vehicle then slows at a constant rate of 1.1 m/s2 until it stops. (a) How much time elapses from start to stop? (b) How far does the vehicle move from start to stop?

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Feeling a bit sleepy today but I'll try :)

a) 20.2 seconds

(15/2.3)+(15/1.1)

b)302.4m

(15*(15/2.3))+(15*(15/1.1))

sorry if its wrong but i hope its right :)
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