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August 22, 2014

August 22, 2014

Posted by **myralove** on Monday, September 27, 2010 at 4:40am.

Show that

d^2 x /dt^2 = -k dx/dt

d^2y/dt^2 = - k dy/dt - g ...... (*)

Given that a projectile with a terminal speed of 30.5 m/s is fired when t=0 from O with an initial speed of 30.5 m/s at an inclination of 45 degree.

(a)Solve (*) for x and y in term of t.

(b) Plot the trajectory of the projectile.

(c) Compare the path trajectory to that when there is no air resistance.

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