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The force raises the speed from 2.5 m/s to 5m/s in 5 second. Later the same force applied for 2 second.what will be final speed of an object in last 2 seconds? Pls do this question and write solution

Posted by Pradeep Mehta 4 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Kartik Yadav 4 years, 1 month ago

ANSWER Given, mass=5kg t1=2s Initial velocity u=3m/s Final velocity v=7m/s t2=5s So, Let the Force be F Let the acceleration be a So, a=t(v−u)=2(7−3)=2m/s2 So the magnitude of the applied force is 10N And the final velocity after 5s is v So, v=u+at v=3+2×5 v=13m/s The final velocity after 5s is 13m/s

2Thank You

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