Moon’s gravity is one-sixth of the earth. A bird can fly in 10 meters per second on earth. How fast can it fly on the moon?
A dog is tied to leash (rope) which is twenty feet in length yet is able to run to a bone lying fifty feet away.
The leash (rope) does not stretch or break in any way. Why?
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Nobody said that the other end of the leash was tied to anything.