A ball is thrown vertically upwards (relative to the train) in a compartment of a moving train. The face of the person sitting inside the compartment is towards engine of the train.

Question

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Answer 1

At the time of throwing the ball, it inherits velocity of platform at that moment . And, the horizontal velocity of the ball is constant in the air, because no acceleration in horizontal direction for ball. If train is accelerating in forward direction then from frame of train, the ball has horizontal component of acceleration in backward direction and vice versa.

Answer 2

At the time of throwing the ball, it inherits velocity of platform at that moment . And, the horizontal velocity of the ball is constant in the air, because no acceleration in horizontal direction for ball. If train is accelerating in forward direction then from frame of train, the ball has horizontal component of acceleration in backward direction and vice versa.

A ball is thrown vertically upwards (relative to the train) in a compartment of a moving train. The face of the person sitting inside the compartment is towards engine of the train.

The ball will maintain the same horizontal velocity as that of the person (or the compartment) at the time of throwing.

If the train is accelerating then the horizontal velocity of the ball will be different from that of the train velocity, at the time of throwing.

If the ball appears to be moving backward to the person sitting in the compartment it means that speed of the train is increasing.

If the ball appears to be moving ahead of the person sitting in the compartment it means the train's motion is retarding.

Two balls of different masses are thrown vertically upwards with the same speed. They pass through the point of projection in their downward motion (neglecting air resistance)

A ball is thrown from rear end of the compartment of train to the front end which is moving at a constant horizontal velocity. An observer $A$ sitting in compartment and another observer $B$ standing on the ground draw the trajectory. They will have

A train is moving on a track at $30$ $m s^{- 1} .$ A ball is thrown with a speed of $30$ $m s^{- 1}$ at $4 5^{\circ}$ with horizontal. Find the distance in the plane of motion of the train, of the ball from the point of projection on the train to the point where it strikes the ground.

Revise with Concepts

Distance and Displacement

Distance/Displacement - Time Graph

Frame of Reference

A ball is thrown vertically upwards (relative to the train) in a compartment of a moving train. The face of the person sitting inside the compartment is towards engine of the train.

The ball will maintain the same horizontal velocity as that of the person (or the compartment) at the time of throwing.

If the train is accelerating then the horizontal velocity of the ball will be different from that of the train velocity, at the time of throwing.

If the ball appears to be moving backward to the person sitting in the compartment it means that speed of the train is increasing.

If the ball appears to be moving ahead of the person sitting in the compartment it means the train's motion is retarding.

Two balls of different masses are thrown vertically upwards with the same speed. They pass through the point of projection in their downward motion (neglecting air resistance)

A ball is thrown from rear end of the compartment of train to the front end which is moving at a constant horizontal velocity. An observer A sitting in compartment and another observer B standing on the ground draw the trajectory. They will have

A train is moving on a track at 30 ms−1. A ball is thrown with a speed of 30 ms−1 at 45∘ with horizontal. Find the distance in the plane of motion of the train, of the ball from the point of projection on the train to the point where it strikes the ground.

Revise with Concepts

Distance and Displacement

Distance/Displacement - Time Graph

Frame of Reference

A ball is thrown from rear end of the compartment of train to the front end which is moving at a constant horizontal velocity. An observer $A$ sitting in compartment and another observer $B$ standing on the ground draw the trajectory. They will have

A train is moving on a track at $30$ $m s^{- 1} .$ A ball is thrown with a speed of $30$ $m s^{- 1}$ at $4 5^{\circ}$ with horizontal. Find the distance in the plane of motion of the train, of the ball from the point of projection on the train to the point where it strikes the ground.