Question

On pressing the accelerator of a car, its velocity increases from 40 km/h to 120 km/h at a

constant rate. What is the average velocity of the car during this interval? Physics class 9​

Answer 1

Answer:

The above mentioned is the answer.

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Explanation:

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Answer 2

Answer:

Explanation:

AVERAGE VELOCITY = TOTAL DISPLACEMENT / TIME

DISPLACEMENT = 40t + 1/2 a t²

ACCELERATION = (120 -40) / t  = 80/t

displacement =  40t + 1/2 * ( 80/t) 8 t²

                       = 80t

AVERAGE VELOCITY = 80t /t = 80 km/hr