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(Solved): An archer is able to fire an arrow mass of 20 gram at a speed of 250 m/s. If a baseball mass of 0.14 ...



An archer is able to fire an arrow mass of 20 gram at a speed of 250 m/s. If a baseball mass of 0.14 kg is given the same kinetic energy, what is its speed?



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mass of the arrow :- ma = 0.02 kg

speed of the arrow :- va = 250 m/s

mass of the baseball mb = 0.14 kg

We have to find the speed of the baseball if the baseball & arrow have the same kinetic energy.



The kinetic energy is proportional to the mass of the object m and to the square of the speed of the object v:
Ek = m * v2 / 2


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