Saturday

January 31, 2015

January 31, 2015

Posted by **Cathy** on Monday, February 2, 2009 at 8:09pm.

My teacher said to calculate the time of flight to get how long the arrow traveled for to get to the deer, but I don't angle of the arrow (unless its 180 degrees).

Formula:t = (65 m/s * sin (180))/(9.81 m/s^2)

- Physics -
**bobpursley**, Monday, February 2, 2009 at 8:26pmIf you dont shoot the arrow at an angle,it will NOT hit the deer, but hit the ground.

The horizontal speed of the arrow is 65cosTheta

The vertical speed is 65sinTheta.

Horizontal distance= horizvelocity*time

or time= 51/65cosTheta

Now put that time here:

Hfinal=Hinitial+ Vi*t -1/2 g t^2

but Hfinal=Hinitial,so

0=65sintheta *t - 4.9t^2

Now put the expression for t you got above, and solve for theta (it is a little messy, and you get two solutions).

Then go back and solve for time.

**Answer this Question**

**Related Questions**

Physics - An archer shoots an arrow that leaves the bow at an angle of 42 ...

Physics - An archer shoots an arrow that leaves the bow at an angle of 42 ...

Physics - An arrow, starting from rest, leaves the bow with a speed of 28.8 m/s...

Basic Physics - While standing on an open bed of a truck moving at 35 m/s, and ...

physics - A 77 g arrow is fired from a bow whose string exerts an average force ...

physics - An 81 g arrow is fired from a bow whose string exerts an average force...

physics - An 85 g arrow is fired from a bow whose string exerts an average force...

Physics - A 87 g arrow is fired from a bow whose string exerts an average force ...

physics - An arrow is shot from a bow at 20.0 m/s at an angle of 65 degrees ...

physics - You have a friend who is an archer and she wants to know how fast the ...