A) ? 2 N-s
B) + 4 N-s
C) 6 N-s
D) Zero
Correct Answer: D
Solution :
Momentum acquired by the particle is numerically equal to area enclosed between the F-t curve and time axis. For the given diagram area in upper half is positive and in lower half is negative (and equal to upper half), so net area is zero. Hence the momentum acquired by the particle will be zero.
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