Question

9.
Two cars leave with a time gap of 1 minute from
the same point. They move with an acceleration of
0.2 m/s2. How long after the departure of the
second car, does the distance between them
become equal to three times its value, when the
second car just starts?
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Answer 1

Ok so as the cars leave.....it means initial velocities should be 0 for each ....

Now as they both move at constant acceleration of 0.2 m/s .......answer is attached