There are three things that could be wrong, one is that the spark plugs are not creating spark or the spark plug wires need to be replaced, second is that the valves are burnt and do not have enough compression, third is it could be the distributor needs replaced, you should make sure that the spark plug wires are tight and that none of your spark plugs are loose. I would add, from personal experience, that it might be the throttle position sensor going bad or totally gone bad. Took my car to the dealer today, they ordered me a sensor, but reset the computer and my car would not drive more than a few feet without dying. Could get it to second gear, but no power at all. Had to leave it there to wait for the sensor. Sigh.
Best guess would be the Sadtler spectra; no idea what the number would be.
Check the fuel filter or the fuel pump.
Only when accelerating, I would suspect a broken motor mount or bad CV joint.
gradually accelerating
It moves faster or slower
Could be in need of a tune up.
A bicycle often "coasts along".
yes it is accelerating the same way you would on a merry-go-round.
Loss of power when accelerating can be caused by a number of things. A leak in the fuel line or even a bad alternator can cause this.
What is a "flapping sound" Birds?
curve
They have broad emission lines of highly ionized elements.