Friday

April 18, 2014

April 18, 2014

Posted by **Anonymous** on Tuesday, November 18, 2008 at 9:23pm.

A) Which arrow goes the farthest?

B) Which arrow goes the highest?

C) Which arrows go the same horizontal distance?

D) Which arrow is in the air for the shortest time?

Please help me out, let me know how to do it.

- Physics -
**bobpursley**, Tuesday, November 18, 2008 at 9:34pmFirst, the time in air:

h=visin45*time -1/2 g time^2

so when does the arrow return to base height?

0=visin45*time-1/2 g t^2

0=(visin45-1/2 g t)t

or time in air is 2*vi*sin45/g

height: when is vv=0?

vv=visin45-gt which is zero at

time=vi*sin45/g

hmax=vi*sin45*vi*sin45/g-1/2 g (visin45/g)^2 or

hmax=1/2 (vi*sin45/g)^2

and so on. for the other angles, put those numbers in and see, the only variable is the sine of the angle.

- Physics -
**Anonymous**, Tuesday, November 18, 2008 at 9:46pmohh okay. thanks.

- Physics -

**Related Questions**

physics - An arrow is shot verticaaly upward. Two seconds later, it is at a ...

physics - Two arrows are shot vertically upward. The second arrow is shot after ...

Physics - Two arrows are shot vertically upward. The second arrow is shot after ...

physics - Two arrows are shot vertically upward. The second arrow is shot after ...

Physics - An arrow is shot into the air at a velocity of 25 m/s and an angle of ...

physics - You are watching an archery tournament when you start wondering how ...

Physics - An arrow is shot at an angle of above the horizontal. The arrow hits a...

Physics - An arrow is shot at 29.0° above the horizontal. Its initial speed is ...

Physics - An arrow is shot at 29.0° above the horizontal. Its initial speed is ...

Physics - An arrow is shot a 30.0° above the horizontal. Its velocity is 49 m/s ...