Galileo introduced the concept of acceleration. how does it work? does it decrease as velocity Increases?

Answer 1

Acceleration is the change of velocity in a determined period of time, so the increment or decrement of acceleration depends on how much your velocity increases or decreases. The acceleration can decrease if the velocity increases only if the change of velocity in a determined period of time is smaller. For example let's say you are traveling at 10 miles per second and in 10 seconds your velocity is 30 miles per second, that means that in those ten seconds, your acceleration was

(30-10)miles per second/10seconds=2miles per second squared

now let's suppose you keep traveling for another 10 seconds and your velocity after those 10 seconds is 40 miles per hour.

(40-30)miles per second/10 seconds=1 mile per second squared.

as you can see the acceleration in the second period of time is smaller than the acceleration in the first period, but that doesn't mean your velocity decreased.

hope it helps.

Answer 2

Acceleration is the rate of change in velocity. The force required to accelerate something is equal to the mass times the acceleration desired. F=ma. This means that heavier things are harder to accelerate.