The position of a moving point in the XY-plane at time t is given by \[\left( (u\cos \alpha )t,(u\sin \alpha )t-\frac{1}{2}g{{t}^{2}} \right),\] where \[u,\,\alpha ,\,g\]are constants. The locus of the moving point is

The position of a moving point in the XY-plane at time t is given by \

1.	The position of a moving point in the XY-plane at time t is given by \[\left( (u\cos \alpha )t,(u\sin \alpha )t-\frac{1}{2}g{{t}^{2}} \right),\] where \[u,\,\alpha ,\,g\]are constants. The locus of the moving point is
A.	A circle
B.	A parabola
C.	An ellipse
D.	None of these
Answer» C. An ellipse

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The position of a moving point in the XY-plane at time t is given by \[\left( (u\cos \alpha )t,(u\sin \alpha )t-\frac{1}{2}g{{t}^{2}} \right),\] where \[u,\,\alpha ,\,g\]are constants. The locus of the moving point is

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