A 2.0 ,kg projectile is moving due east at 10 ,m/s when it explodes into two fragments

PHYSICS · Single correct · CBSE · Physics · Work, Energy and Power · Work, Energy and Power

Problem

A 2.0\,kg projectile is moving due east at 10\,m/s when it explodes into two fragments. The lighter fragment has mass 0.50\,kg and moves due north at 20\,m/s immediately after the explosion. Neglecting external forces, what is the speed of the heavier fragment? (a) 13.3 m/s13.3\,\text{m/s} (b) 6.7 m/s6.7\,\text{m/s} (c) 15 m/s15\,\text{m/s} (d) 12 m/s12\,\text{m/s}

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