8. A car has a uniform acceleration of 8 m/s2. What distance will it cover in 20 s after starting from rest?
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Answer:
1600 metres
Explanation:
a= 8m/s2 ; t=20 s ; u= 0
S= distance
formula:
S= ut+ 1/2 at2
So,
S= 0 x 20 + 1/2 x 8 x 20 x 20
=> S= 0+ 1600
=> S = distance = 1600 m
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