what is projectile? a projectile is fired with a velocity u make an angle theta with horizontal direction. show the trajectory is parabola.
Asked by futureisbright051101
4th March 2018,
7:09 PM
Answered by Expert
Answer:
Projectile is an object projected with some velocity and its initial direction of motion makes an angle α ( α >0 and α <90°) with horizontal direction.
Projetile moves in a two dimensional plane so that at given time it has vertical displacement as well as horizontal displacement from the point of projection.
Let the projetion velocity be u and let it make an angle α with horizontal x-direction
velocity component :- ux = u cos α and uy = u sin α
displacement component :- x = u cos (α) × t and y = u sin(α)× t - (1/2) × g × t2;
by eliminating t ( substitue t = x / [u cos(α) ] in y-displacement ),
we get for vertical displacement, 
above equation is similar to y = bx - cx2 , which is equation of parabola
Answered by Expert
5th March 2018,
4:11 PM
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