When the velocity remain constant
Answers
If acceleration is constant, then the speed of the object is increasing at a constant rate. For example, assume that driving a car and moving at a speed of 100kmph and you suddenly applied an acceleration (by stepping on the gas pedal) of 10kmph/h. The speed of your car will then start increasing at the rate of 10kmph every hour. That means if you keep the acceleration constant, then your car will be moving at a speed of 110kmph after one hour (or at 105kmph after 30 minutes).
To to solve for the speed in this case, you may use Newton’s equations such as:
v = u + at, where v is the final speed, u is the initial speed, a is your constant acceleration and t is the time period. In our example above:
v = 100 + 10*1
v = 110, which is the speed that your car will be moving at after applying a constant acceleration of 10 for one hour.
In real life, however, acceleration is often varying, such as when driving your car, and the above equation cannot be used as shown. In this case you would go for more complex solutions to use instantaneous acceleration and integration to solve for the speed.
I hope this helps…