A point mass starts moving in a straight line with constant acceleration 
from rest at 
.
At time 
2 s, the acceleration changes the sign, remaining the same in magnitude. The mass returns to the initial position at time 
after the start of motion. Here, 
is
A
4 s
B
C
D
8 s
Text Solution
Verified by ExpertsThe correct answer is:
B
For 
to 
For dist. 
to 
For 
to 
Let, 
Now 
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