What does this rebus means ?

Accidentally, two trains are running in the opposite direction and enter a tunnel that is 200 miles long. A supersonic bird that has fled the lab and taken shelter in the tunnel starts flying from one train towards the other at a speed of 1000 mph. As soon as it reaches the second train, he starts flying back to avoid collision and meets the first train again at the other end. The bird keeps flying to and fro till the trains collide with each other.

What is the total distance that the supersonic bird has traveled till the trains collided?

In the image given, you can find several triangles. Can you count them all?

What has a ring but no finger?

What can you deduce from the following BrainBat?

CRY
LMKI

There is a unique number which when multiplied by any number from 1 to 6, we will get the new number that contains the same digits only.

Can you find that number?

Yesterday I fell from 30 feet high ladder but I don't get hurt. Why?

What is the below Rebus indicate?

Rearrange the letters in "new door" to make one word.

Find the smallest sentence with all the English alphabet.