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Question

A body of mass 1 kg is subjected to a force of 20 N for 10 seconds after which the force ceases to act. What distance would it travel in the next 10 seconds?


Correct Answer
A
2 km
Your Answer
B
3 km
Your Answer
C
4 km
Your Answer
D
5 km

Solution

The correct option is A 2 km
For AB:
Acceleration can be given as a=ForceMass=20 N1 kg=20 m/s2
Velocity of the body after first 10 s=vB=u+at=20×10=200 m/s
For BC:
As there is no force acting on the body in this part so,
Acceleration =0
 Distance travelled by the body in next 10 s=BC=vB×t=200×10
=2000 m=2 km

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