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Grade: 12

                        

a BALL IS THROWN UPWARD N IT RETURNS TO GROUND DESCRIBING A PARABOLIC PATH. WHICH OF THE FOLLOWING REMAINS CONSTANT AND WHY PLS EXPLAIN a) KE OF BALL B) SPEED OF BALL C) HROZONTAL COMPONENT OF VELOCITY D ) VERTICAL COMPONENT OF VELOCITY

11 years ago

Answers : (4)

Ramesh V
70 Points
							

Dear friend,

only the horizontal component remains constant as as there is no component of acc. in horizontal direction.

The g aaceleration due to gravity acts downwords hence there is no accln in horizontal direction, the velocity changes in vertical direction as goes up and down while in horizontal it goes only forward.

 

Please feel free to post as many doubts on our disucssion forum as you can. If you find any question difficult to understand - post it here and we will get you the answer and detailed solution very quickly. We are all IITians and here to help you in your IIT JEE preparation. All the best.

Regards,
Naga Ramesh
IIT Kgp - 2005 batch

11 years ago
shanky shanky
18 Points
							

C-it si the correct one .

as vert. compo. of velo. i.e.=v sinA is a variable compo.

and only Hz. compo.  i.e.v cosA will be constant.

10 years ago
Rajlaxmi das
21 Points
							Answer c is correct as horizontal component of the parabolic  path remains constant throughout the projection
						
3 years ago
Kushagra Madhukar
askIITians Faculty
605 Points
							
Dear student,
Please find the explanation to the problem.
 
As there is no acceleration in x direction the velocity along it remains unchanged while the velocity along y direction changes due to acceleration of gravity(g) along y direction due to which speed and KE also varies.
Therefore, option c) is correct.
 
Hope it helps.
Thanks and regards,
Kushagra
3 months ago
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