A 30.0 g arrow is shot by William Tell though an 8.00 cm thinck apple sitting on top of his son's head. If the arrow enters the apple at 30.0 m/s and emerges at 25.0 m/s in the same direction, with what force has the apple resisted the arrow?

Question

anonymous · Answer

1.Determine acceleration,  $$a = (v ^{2} - v _{0^{2}})\div2d$$
Force = ma
$$Force = 30 \times10^{-3 } \times (25^{2} - 30^{2 })\div(2\times8\times10^{-2})$$ N
Force = 51.6 N