- #1
sankalpmittal
- 785
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Objective questions regarding "projectile motion - 2 dimension".
There are 2 mini problems :
1. If t1 and t2 be the times of flight from A to B and "θ" be the angle of inclination of AB to the horizontal , then t12 + 2t1t2sinθ + t22 is
(A.) independent of θ
(B.) equal to 0
(C.) dependent on θ
(D.) none of the above is correct.
2. If B has horizontal and vertical coordinates x,y referred to A , and the velocity of projection is √(2gh) , and the angle between the two paths at B is a right angle , then B lies on the ellipse ,
(A.) x2+2y2 = 2hy
(B) x2 + y2 = 2hy
(C) 2x2 + 2y2 = 2hy
(D) x2+2y2 = 2hx
http://en.wikipedia.org/wiki/Trajec...tions_at_the_final_position_of_the_projectile
1. Answer seems to be C but its not !
2. I don't understand the question seriously. Langauge seems confusing to me !
Please help...
Thanks in advance ..
Homework Statement
There are 2 mini problems :
1. If t1 and t2 be the times of flight from A to B and "θ" be the angle of inclination of AB to the horizontal , then t12 + 2t1t2sinθ + t22 is
(A.) independent of θ
(B.) equal to 0
(C.) dependent on θ
(D.) none of the above is correct.
2. If B has horizontal and vertical coordinates x,y referred to A , and the velocity of projection is √(2gh) , and the angle between the two paths at B is a right angle , then B lies on the ellipse ,
(A.) x2+2y2 = 2hy
(B) x2 + y2 = 2hy
(C) 2x2 + 2y2 = 2hy
(D) x2+2y2 = 2hx
Homework Equations
http://en.wikipedia.org/wiki/Trajec...tions_at_the_final_position_of_the_projectile
The Attempt at a Solution
1. Answer seems to be C but its not !
2. I don't understand the question seriously. Langauge seems confusing to me !
Please help...
Thanks in advance ..