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An explosion breaks a rock into three parts in a horizontal plane. Two of them go off at right angles to each other. The first part of mass 1 kg moves with a speed of 12 ms⁻¹ and the second part of mass 2 kg moves with speed 8 ms⁻¹. If the third part flies off with speed 4 ms⁻¹ then its mass is
Options
(a) 5 kg
(b) 7 kg
(c) 17 kg
(d) 3 kg
Correct Answer:
5 kg
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
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Topics: Work Energy and Power
(94)
Subject: Physics
(2479)
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