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Grade 12th passAIPMT

On an object of mass 1kg moving along x-axis with constant speed 8m/s a constant force 2N is applied in positive y-direction.Find its speed after 4 seconds.?

Profile image of Lakshmi Vinod
8 Years agoGrade 12th pass
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2 Answers

Profile image of Debdeep
8 Years ago
Velocity along x=8(constant) Acceleration along y=2m/s^2Velocity along y after 4 s=2*4=8m/sSpeed =8\/2m/s
Profile image of Deligant
7 Years ago
  1. Mass=1kg.     Velocity= 8i^.   Force=2j^.  F= ma  so.   2j^=1.v-u/t.  = v-8i^/4.  So 8j^+8i^=v. Since he is asking the magnitude.    ​root over 82+82=8root 2
 
 

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