An explosion blows a rock into three parts. Two parts go off at right angles to each other. These two are, 1 kg first part moving with a velocity of 12 ms 1 and 2 kg second part moving with a velocity of 8 ms1. If the third part flies off with a velocity of 4 ms1, its mass would be

Question:

Options :

(a) 5 Kg
(b) 7 Kg
(c) 17 Kg
(d) 3 Kg

Answer :

(a) 5 Kg

Answer Steps :

step 1:

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