Question

A 0.053-kg arrow is fired horizontally. The bowstring exerts an average force of 70 N on the arrow over a distance of 0.90 m. With what speed does the arrow leave the bow? A 0.053-kg arrow is fired horizontally. The bowstring exerts an average force of 70 N on the arrow over a distance of 0.90 m. With what speed does the arrow leave the bow? @Physics

Answer 1

is it greater than 1000 m/s?

Answer 2

I have no clue

Answer 3

\[\Large \begin{array}{l}
W = Fd\cos \theta \\
= 0.9 \times 70\cos 0 = 6.3J\\
KE = \frac{1}{2}m{v^2}\\
{v^2} = \frac{{2KE}}{m}\\
v = \sqrt {\frac{{2KE}}{m}} \\
= \sqrt {\frac{{2 \cdot 6.3}}{{0.053}}} \\
\cong 15.42m{s^{ - 1}}
\end{array}\]