Posted by **Karen** on Monday, November 26, 2012 at 5:37pm.

An artillery shell is ﬁred at an angle of 75.7 above the horizontal ground with an initial speed of 1720 m/s.

The acceleration of gravity is 9.8 m/s^2.

Find the total time of ﬂight of the shell,neglecting air resistance. Answer in units of min.

- Physics -
**Elena**, Monday, November 26, 2012 at 6:02pm
t= 2vₒâ€¢sinα/g

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