Question

an arrow strikes a target causing an internal energy increase of 40.48J if the arrow is fired so that it enters the target at the same height above the ground as when its fired what is the arrows internal kinetic energy

Answer 1

Here we know that internal energy of arrow has been increased by 40.48 J as it is striking to the target

so here by energy conservation we can say

initial kinetic energy of arrow = final internal energy of the arrow

so here we have

`KE = U_(internal)`

so here since increase in the internal energy is 40.48 J

so the kinetic energy will be given as

`KE = 40.48 J`