Question

A bullet of mass 40 g is fired from a gun with initial velocity of 50 m/s. If mass of the gun is 8 kg. Then magnitude of recoil velocity of the gun will be

Answer 1

Linear Momentum = mass x velocity

Total Momentum = 0.04kg x 50 m/s

= 2 Nm/s

Total recoil = 8 x 2 Nm/s

= 16 N

Answer 2

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These are known as characteristics of a chemical reaction. Let's perform an activity to understand. Take zinc granules in a conical flask and add hydrochloric acid to it and observe. We see that the mixture produces zinc chloride and the temperature of the conical flask is increasing.

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