A) 20 m
B) 24 m
C) 28 m
D) 23 m
Correct Answer: C
Solution :
Position of a particle is |
\[s=3{{t}^{2}}-12t+9=3\left( t-1 \right)\left( t-3 \right)\] |
So, path of particle is |
Total distance covered |
\[s=4+4+20=28m\] |
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