What is acceleration...???
Answers
Answer:
Acceleration, rate at which velocity changes with time, in terms of both speed and direction. A point or an object moving in a straight line is accelerated if it speeds up or slows down. Motion on a circle is accelerated even if the speed is constant, because the direction is continually changing.
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HEYA, BUDDY !!
➜ When a stationary car starts suddenly, we get pushed up backward, and when brakes are applied, we get pushed forward against our seat, or when our car takes a sharp right turn, we get pushed towards the left. We experience these situations because our car is accelerating.
➜ Simply when there is a change in velocity, there will be acceleration. Let’s understand the concept of acceleration with illustrative examples.
➜ Let’s suppose I have a car moving with a constant velocity of 90 kmph along a straight line. I can see a helicopter flying at roughly a speed of 20,000 kmph. If I were to ask you that in these two cases, where do you find the acceleration? Your answer will be surely no because both are moving at a constant pace, so no acceleration in both cases.
➜ Now, if I ask you that acceleration is equal to high speed. What will be your answer? You may say yes, but that’s not true for sure. Want to know why? It’s because acceleration is the rate of change of velocity. Now, let’s understand what is acceleration formula.
➦ We already know that velocity is a speed with direction; therefore, it is a vector quantity. The acceleration ‘a’ is given as:
a = Change in velocity/Time Taken
➦ This formula states that the rate of change in velocity is the acceleration, or if the velocity of an object changes from its initial value ‘u’ to the final value ‘v’, then the expression can be simply written as:
a = (v - u)/t