CBSE Class 10 Answered
A BULLET FIRED INTO A FIXED TARGET LOSES HALF OF ITS VELOCITY AFTER PENETRAATING 3 CM. HOW MUCH FURTHER IT WILL PENETRATE BEFORE CONING TO REST ASSUMING THAT IT FACES CONSTANT RESISTANCE TO MOTION.
Asked by deepika babbar | 18 Oct, 2013, 12:39: PM
The bullet loses half its velocity after penetrating 3 cm into the target.
Let us say that the gun fires the bullet with force F.
The work done by the gun goes as change in kinetic energy of the bullet.
Thus, work done after penetrating 3 cm inside the target is
F
Answered by Romal Bhansali | 28 Oct, 2013, 09:55: AM
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