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An object starting from rest travels 20m in first 2s and 160 m in next 4 s. what will be the velocity after 7 sec.from the start .
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An object starting from rest travels 20m in first 2s and 160 m in next 4 s. what will be the velocity after 7 sec.from the start .
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Answer:
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Answer:
HEYA DEAR YOUR ANSWER
GIVEN OBJECT STARTS FRM REST , U=0,T=2s,s=20m
Using 2nd equation of motion=S=it+½at²
on putting u =0 in above equation,
20=0×2+½×a(2)²
20=2a
a=10m/s²
Now , from the first equation of motion ,,, velocity after 7s from the start
v=u +at
0+10×7
=70m/s
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