Question

A car is moving along a straight track with a velocity of 20 ms' due East. After 5 s it starts retracing
its path with the uniform velocity y. If its average velocity after 15 s is zero, then y is
a) 20 ms due East
b) 10/2 ms' due West
c) 10 ms due West
d) 5/2 ms due East
​

Answer 1

Answer:

option c

Explanation:

10 ms due west

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Answer 2

Answer:option C
Explanation: It is option C due to west 10ms