# Physics

a shell is fired at a velocity of 300 m/s at an angle of 30.
a. how far does it go?
b. what are it's time of flight and maximum altitude?
c. At what other angle could the shell have been fired to have the range?

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1. figure time in the air.

hf=hi+Vvi*timeinair-1/2 g timinair^T2

0=0+300sin30*t-4.9g^2

t=150/4.9 seconds

how far: distance=300cosss30*t
time of flight (above)
angle:try 60 deg and see if it works.

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