- #1

unfortunate

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(a) Find the time of flight.

http://img153.echo.cx/img153/5338/showme2mp.gif

I used the following formula:

Yf = Yo + VoT - (1/2)GT^2

0 = 0 + (31 m/s sin 45)T - (1/2)(9.8 m/s^2)T^2

0 = 21.92T - 4.9T^2

-21.92T = -4.9T^2

T = 4.47s

I'm checking my answer for the problem on my school website and it's coming back as wrong. I pretty sure I'm using the correct formula for problem. The math looks right.