A car starting from rest moves with constant acceleration of 2.0 m/s2 for 10 s, then travels with constant speed for another 10 s, and then finally slows to a stop with constant acceleration of -2.0 m/s2. How far does it travel? PLease answer fast!

Question

***[isuru]*** · Answer

Hi,
     U can solve it by using 2 methods
             1. With the help of a (v-t)  graph - [velocity -time]
             2. with equations of linear motion 

Which way do u prefer.... to solve this ?

anonymous · Answer

x1=1/2 a t^2
x2=(vo)t + x1
x3=-(1/2)at^2 + x2

anonymous · Answer

I prefer to solve it the fast way. I have 4 different answers. 200m, 300m, 400m, or 500m

***[isuru]*** · Answer

It depends on wt u r  more familiar with .... R u familiar with equations than graphs or the other way round?

anonymous · Answer

graphs please. which one is the answer? is it 200m? 300m? 400m? or 500m?

***[isuru]*** · Answer

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