21) Three different objects m1, M2, M3 are allowed to
fall from rest and from the same point o
along three different friction less paths. The speeds of three objects, on reaching ground, will be in ratio of
(a) m1:m2:m3
(b) 1:1:1
(c) m1 : 2m2 : 2m3
(d) 1/ m1 : 1 / m2 : 1 / m3
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Answer:
b 1:1:1
when some things of different massses are thrown from same place at same time they will have same speed if there is no friction
because of gravitational force
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