A shell is fired from a gun from the bottom of the hill along it's slope.The slope of the hill is 30 degrees,and angle of the barrel is 60 degrees.The initial velocity u of the shell is 21m/s.Find the distance along the slope from the gun to the point at which shell falls,take g=10m/ssquare
Anyone who has never made a mistake has never tried anything new
You can never solve a problem on the level on which it was created.
When you are courting a nice girl an hour seems like a second. When you sit on a red-hot cinder a second seems like an hour. That's relativity
Purpose of solving a problem is not simply to get the answer(the answer is only an evidence) but to develop your thinking ability