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A car accelerates from rest at constant ...

A car accelerates from rest at constant rate of `2ms^(-2)` for some time. Immediately after this, it retards at a constant rate of `4ms^(-2)` and comes to rest. The total time for which it remains in motion is 3 s. Taking the moment of start of motion as t = 0, answer the following questions.
At t = 3 s, the speed of the car is zero. The time for which it increases its speed is

A

1 s

B

2 s

C

3 s

D

1.5 s

Text Solution

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The correct Answer is:
B
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