Mahesh moving on a road with …
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Preeti Dabral 2 years, 10 months ago
distance travelled in 1st second=20m
time taken to travel this distance=1s
So speed in first second is dist/time = 20m/s
Similarly speed in 2nd second is 40m/s
Now acceleration = dv/dt
Here dv means change in v, where v is velocity and dt means change in t where t is time interval.
Change in velocity = final vel. — initial vel.
That is, 40-20 = 20m/s
And change in time = 2 — 1 = 1s
So acceleration is 20m/s / 1s = 20m/s^2 Ans.
Metre per second square is the standard unit of acceleration.
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