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CBSE Class 9 Answered

WHY WE HAVE TO CALCULATE THE CHANGE IN VELOCITY IN THE 1St EQUATION OF MOTION?
Asked by mansi | 10 Jul, 2014, 07:04: PM
answered-by-expert Expert Answer

Motion can be either accelerated or with uniform velocity. Now, acceleration is the rate of change of velocity.

Hence, in order to incorporate acceleration into the picture, we consider change in velocity in the first equation of motion.

Now, first equation of motion is given as v = u + at

Now, if we consider an object which is moving with zero acceleration then we have

v = u + 0 = u

Hence, both kinds of motion are considered in the above equation.

Answered by Romal Bhansali | 11 Jul, 2014, 09:30: AM

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