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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

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

Grade:12

4 Answers

Ramesh V
70 Points
12 years ago

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.

 

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Naga Ramesh
IIT Kgp - 2005 batch

shanky shanky
18 Points
11 years ago

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.

Rajlaxmi das
21 Points
4 years ago
Answer c is correct as horizontal component of the parabolic path remains constant throughout the projection
Kushagra Madhukar
askIITians Faculty 629 Points
one year ago
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

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