Answer:
It is always said that mass is same everywhere.
The displacement of the bird is 1.8 km...because displacement is the distanse of the object from mean position to the travelled position.....hope it helps
Option A 3......
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4) They have non-moving magnetic fields.
To summarize, Jane's star has a red light and is traveling towards the earth while John's star star has a blue light and is traveling away from the earth. ... The stars look different because they are traveling in different directions.