Initial Velocity Question

[MaNiFeST]

Yeah, my last post indicated that i could use a protractor , but after googling , i do not know how to measure displacement or distance for a vertical length using one

Would you happen to have a tutorial or maybe some helpful tips on this process?

 

[drpizza]

Have you learned about sin, cos, and tangent? The protractor can be used to measure the angle between the ground and the balloon, if you stand a distance away from the launcher. Measure this distance as well, and draw a right triangle. You'll have the bottom of the right triangle, an acute angle, and of course, the 90 degree angle at the launcher. Simple right triangle trig can be used to solve for the vertical side of the triangle.

 

[MaNiFeST]

ok thanks drpizza, yeah i have learned about sin,cos tan, though this will be hard measuring it in a matter of seconds