7. Draw the shape of the distance-time graph for uniform and non-uniform motion of object. A bus of starting from rest moves with uniform acceleration of 0.1 m/s2 for 2 minutes. Find (a) speed acquired. (b) distance traveled
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7. Shape of uniform acceleration= straight line
shape non uniform acceleration is curved line
(a) t=2mins=120,
a=0.1m/ssq,
u=0,
speed=?
a=(v-u)/t
0.1=v-0/120
120*0.1=v
12=v, v=12m/s=speed
s=ut+1/2*at*t
s=0+1/2*0.1*120*120
s=1/2*1440
s=720, s=distance travelled=720m
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