17. A body of mass 5 kg is moving with velocity of v = (21 +6j) m/s at t = 0 s. After time t = 2s
(10i+6i), then change in momentum of body is
(1) 40 kgm/s
(2)
20 kgm/s
(3) 30i kg m/s
(4) (50i +30ſ) kg m/s
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I went to a fruits seller to buy bananas of rupees 120 only. During my purchase I could fell that I was paying 10 rupees more per dozen of banana then my previous one at the same shop and same amount. Then how many bananas did I get ?
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