Question

Suppose you are sitting in a high speed train like Jan Shatabdi express which is travelling with a uniform velocity. If you flip a coin as shown in the fig. you will observe that
A. The coin does not reach again in your hand
B. The coin reaches again in your hand
C. The coin falls behind you
D. The coin fall in front of you

Answer 1

This question is an easy application of the concept of the relative motion. The coin will be having the horizontal velocity of the train due to the virtue of the relative motion. Relative velocity is the velocity of an object or observer B in another object or observer A's remaining frame.

Complete step by step answer:
So, if the coin is placed in the arm, zero is the relative shift between the train and the coin.
The force acting on the coin by frictional force as the coin flips, ceases operating on the palm and hand and starts to travel at the uniform speed at which it travelled horizontally at the time of flip.
As the train was running at a uniform pace, the distance travelled by the coin will be the same as yours and the train.
Or,
When the coin was kept at Palm, there was zero relative motion between the train and the coin.The force acting on the coin by frictional force, at the palm of the hand, started operating after the coin was flipped, and it begins to travel at the uniform speed at which it travelled horizontally at the time of flip. As the train was running at a uniform speed, the distance travelled by the coin would be the same as that of the rider and the train.

So, the correct answer is “Option B”.

Note: In daily life, the reference point is taken to be the ground or the earth when we calculate an object 's velocity. For instance, if you are riding on a train and the train is riding at a speed of 100 km / hr, your speed is zero according to another passenger sitting on that train.