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If a body losses half of it's velocity on penetrating 3 cm in a wooden block, then how much will it penetrate more before coming to rest?
(a) 1 cm
(b) 2 cm
(c) 3 cm
(d) 4 cm
Updated Tue, 11 Sep 2018 02:29 pm


The meanand S.D of 20 items were found to be 10 and 2. If an item 12 was misread as 8 the correct mean and S.D are
Updated Tue, 11 Sep 2018 02:28 pm