Question

Two trains moving in the same direction and at the same speed will be ___.

• A. at rest with respect to each other
• B. in motion with respect to each other
• C. at rest with respect to an observer standing outside the train
• D. in motion with respect to an observer standing outside the train.

Answer 1

Answer: (A), (D)

The correct options are
A

at rest with respect to each other

D

in motion with respect to an observer standing outside the train.

Rest and motion are relative, a body can be in motion with respect to an object and the same body can be at rest with respect to another object.

When 2 trains are moving in the same direction with the same speed, the passengers in both the trains are at rest with respect to each other.

While to a person standing outside the train both of them will be in motion.