A bullet travelling with a speed of 150m/s is juct able to pierce a plank of 4cm thick . what should be the velocity of bullet so that it is just able to pierce a plank of thickness 16cm?
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1
Answer:
v= 300 m/sec
Step by step explanation:
It is given that the bullet travels 4 cm at a velocity of 150 m/s.
First of all, we calculate the Energy of the bullet as follows:
.
We need to calculate the speed if the bullet will travel 16 cm. Therefore, it will have an energy of 16/4 of the original energy.
Answered by
0
Answer: The velocity of the bullet should be 300m/ sec
Explanation:
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