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NIKHIL GARG Grade: 12
        

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6 years ago

Answers : (2)

AKASH GOYAL AskiitiansExpert-IITD
419 Points
										

Dear Nikhil


For sign of u see the slope (dx/dt) is positive or negative


at t1 slope is +ve u will be +ve


at t2 slope is zero , u will be zero


at t3 slope is -ve, u will be negative


For sign of ax (d2x/dt2) see whether curve is concave upwards or downwards


at t1 and t3 it is concave upwards hence ax is +ve


at t2 it is concave downwards hence ax is -ve


All the best.


AKASH GOYAL


AskiitiansExpert-IITD


 


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6 years ago
Rahul Kumar
131 Points
										

Hi Shashank,


Please complete you question what exactally you want to know.

5 years ago
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