A wheel of radius 1 meter rolls forward half a revolution on a horizontal ground
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A man walks on a straight road from his home to a
marked 2.5 km away with a speed of 5 km/h.
Finding the market closed, he instantly turns and
walks back home with a speed of 7.5 km/h. The
average speed of the over the interval of time 0 to
40 min. is equal tovinay sir
vinay sir pw
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A wheel of radius 1 meter rolls forward half a
revolution on a horizontal ground. The magnitude
of the displacement of the point of the wheel
initially in contact with the ground is
(1) 2 (2) 2
(3) + 2 4 (4)