Answer :

AL2006
'Acceleration' doesn't mean 'speeding up'. It means any change in the speed or direction of motion.  Any motion that's not constant speed in a straight line is accelerated motion.
Here are a few.  I'm sure you can think of lots more.

-- go around a curve on a bicycle or in a car
-- jump up in the air and come down again
-- jump from a diving board
-- stop pedaling or turn off the engine and coast to a stop
-- ride a satellite in orbit around the Earth
-- stand still on the Earth, and let it spin you around in a circle in 24 hours

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