in 4 seconds. Calculate the acceleration. We sometimes refer to a moving object as having a 'constant acceleration' or a 'uniform acceleration'. A constant or uniform acceleration means that the ...

These graphs also show if the object is moving at a constant speed or accelerating, decelerating, or still. Acceleration is shown by a straight rising line. Deceleration is shown by a straight ...

Dark energy makes up roughly 70 percent of the universe, yet we know nothing about it.Around 25 percent of the universe is the equally mysterious dark matter, leaving just five percent for everything ...

A recent discovery could revolutionize our understanding of the cosmos: dark energy seems to evolve over time, with new data suggesting it is now about 10% weaker.