Question

21. Apa
A passenger in a train moving at an acceleration a, drops a stone from the window. A person, standing
the ground, by the sides of the rails, observes the ball falling
(1) Vertically with an acceleration Vg? +a?
(2) Horizontally with an acceleration Vg2 + a?
(3) Along a parabola with an acceleration
g? +a?
(4) Along a parabola with an acceleration g​

Answer 1

Answer:

Along a parabola with an acceleration g

Explanation:

A passenger in a train moving at an acceleration a, drops a stone from the window. A person, standing

the ground, by the sides of the rails, observes the ball falling

As stone is dropped from the window of train

so horizontal speed = speed of Train

Horizontal acceleration = 0   ( as detached from train & no more force available for acceleration)

Vertical speed = 0

acceleration = g  ( acceleration due to gravity)

Vertical speed will keep increasing due to g  & horizontal speed is also there

=> Stone will fall along a parabola

Net acceleration = √0² + g² = √g² = g

Along a parabola with an acceleration g​ is correct answer

Answer 2

Answer:

the ans is parabola with acceleration 'g'