Answer:
Light travels at a speed of 299,792 kilometers per second; 186,287 miles per second. It takes 499.0 seconds for light to travel from the Sun to the Earth, a distance called 1 Astronomical Unit.
Answer:
Yes.
Explanation:
The person and the cart are moving together, and being effected by the same kinetic and potential energy.
Answer:
No, this would not be a symbiotic relationship.
Explanation:
Symbiotic relationship is between plants and fungi.
Fungi? Question is a bit vague.