amit drives car at a constant speed of 6 km/hour draw a time distance graph for this situation from graph find (i) the distance covered by amit in 3 1/2 hours (ii) the time taken by amit to cover 90 km
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Answer:
1) data:
vi=1.66 m/s
vf=6km/hr into m/s
6 x 1000/3600
vf=1.66 m/s
t=15.5 hr into sec
15.5 x 60
t= 930 sec
required:
S=?
a=?
solution:
we know that; according to the acceleration:
a=(vf-vi)/t
a= (1.66-1.66)/930
a=0/930
a=0ms-2
we know that; according to the 2nd equation of motion:
S=vit+1/2at2
S=(1.66)(930)+1/2(0)(930)2
S=1543.8+1/2(864900)
S=1543.8+864900/2
S=1543.8+432450
S= 433993.8 m
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