What is the speed of the train whose length is 210 metres? I. The train crosses another train (Howrah Express12869) of 300 metres length running in opposite direction in 10 seconds. II. The train crosses another train (Howrah Express12869) running in the same direction at the speed of 60 kmhr in 30 seconds.

Both I and II are necessary to answer

I alone sufficient while II alone not sufficient to answer

II alone sufficient while I alone not sufficient to answer

Either I or II alone sufficient to answer

Both I and II are not sufficient to answer

A particle is projected vertically upwards with a velocity of 196 msec. What will be its velocity at the end of 30 seconds?

98 m/sec in the downward direction

98 msec in the upward direction

99 msec in the upward direction

99 msec in the downward direction

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