A car starts from xi = 12m at ti = 0 and moves with the velocity graph shown in figure below. What is the objects position and t=3s and t=4s? Picture in comments below

Question

anonymous · Answer

attachment

anonymous · Answer

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For t = 3s, find the area of triangle AOB.

anonymous · Answer

Add this value to initial position 12 m to get the position at t = 3s

anonymous · Answer

so at t=3s it is 30..

anonymous · Answer

Correct! Now go for t  = 4s..

anonymous · Answer

how the are is  30!! it is 3x12x0.5=18 m at 3sec

anonymous · Answer

and then t=4 is 28 :)

anonymous · Answer

hey man get area!! at 4 sec 
you will minus the 2 triangles 18-2= 16 m

anonymous · Answer

I got the right answers according to Mastering Physics.. Thank you ShailKumar for telling me how to do this :)

anonymous · Answer

how did u get 30 for 3sec ??

anonymous · Answer

Catch me it is area plus the initial position of 12m

anonymous · Answer

OK thanks i didn't read your initial question carefully :D

anonymous · Answer

Happy learning ! :) @zydic and @Catch.me

anonymous · Answer

@ShailKumar  :D , but i do know that concept just didn't read the question carefully :P

anonymous · Answer

Never mind! :) @Catch.me