Page 7 - Lesson Notes

This shows velocity is directly proportional to time that shows body is moving with
[uniform velocity] but here in this body is not starting from rest, it has already acquired a
velocity of 10m/sec.
If we look at the markings carefully we observe, that when time is 1 sec then velocity is
10m/sec, when time is 2 sec the velocity is 20m/sec. We can say there is an equal
increase with equal intervals of time.
So, the information we get is:

 Body is moving with uniform velocity but not starting from rest .

 Acc =equal to the slope

a= v-u/t
a=40-10/4=30/4=7.4m/sec2

 Displacement = area of trapezium

S= ½ (OA+ BC) x CO
= ½ (10 +40) x 4
= ½ x 50 x 4 =100m