An explosion breaks a rock into three parts in a horizontal plane. Two of them go off at…
Physics · NEET · NTA Exams — Laws of Motion
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 8 ms−1 speed. If the third part flies off with 4 ms−1 speed, then its mass
- 7 kg.
- 17 kg.
- 3 kg.
- 5 kg.
Answer
(D) 5 kg.
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