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Grade: 11
        
PLZ ANSWER THE QUESTION GIVEN IN THE IMAGE. AND ASLO WITH PROPER EXPLANATION AND DIAGRAM. FOLLOW ME ON INSTAGRAM @neerajhazarika_ …........................................................................................................................................................................................................
one month ago

Answers : (1)

Arun
15885 Points
							

When the man is walking at 3km/h , the rain appears to fall vertically. When we say that, we say the rain falls vertically w.r.t the man.

So, the rain should have a horizontal component of velocity equal to that of the man, so as to fall vertically w.r.t him, which means it should have a horizontal velocity of 3km/h.

Now for the vertical part. Since the man has no vertical velocity, the vertical component of the rain w.r.t the man doesn't get affected. And when he increased his speed to 6 km/h, the rain will appear ro have a backwards 3 km/h horizontal component w.r.t to the man. So, if the rain falls at an angle of 45 degree, then both its horizontal and vertical component must be same (tan45 = 1). So the vertical velocity must also be 3 km/h. So the resultant velocity will be 3√2 km/h.

one month ago
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