Presently, the speed of light in a vacuum is defined to be exactly 299,792,458 m/s (approximately 186,282 miles per second). . An early experiment to measure the speed of light was conducted by Ole Romer, a Danish physicist, in 1676. Using a telescope, Ole observed the motions of Jupiter and one of its moons, Io
A. Acceleration is the answer to you question. When an object changes velocity it can accelerate.<span />
Answer:
a).
b).
c).
Explanation:
a).
The acceleration for definition is the derive of the velocity so:





Replacing

b).
If the pulsar will continue to decelerate at this rate, it will stop rotating at time:




c).
582 years ago to 2019
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