3A body of mass 5 kg explodes at rest into threefragments with masses in the ratio 1: 1: 3The fragmentswith equal masses fly in mutually perpendiculardirections with speeds of 21 m/sThe velocity ofheaviest fragment in m/s will be [1989]

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3A body of mass 5 kg explodes at rest into threefragments with masses in the ratio 1: 1: 3The fragmentswith equal masses fly in mutually perpendiculardirections with speeds of 21 m/sThe velocity ofheaviest fragment in m/s will be [1989]






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