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Question
A car accelerates uniformly on a straight road from rest to a speed of 180 km hr^-1 in 25 seconds. Find the distance covered by the car in this time-interval.
A car accelerates uniformly on a straight road from rest to a speed of 180 km hr^-1 in 25 seconds. Find the distance covered by the car in this time-interval.
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Solution
Given,
u = 0 ,v= 180 km/hr =50 m/s , t = 25 seconds
We know,
v = u + at
50 = a×25
a = 2 m/sec2
Distance covered by the body,
S = ut + at2 /2
= 0+ 2×625/2
= 625 m = 0.625 km
u = 0 ,v= 180 km/hr =50 m/s , t = 25 seconds
We know,
v = u + at
50 = a×25
a = 2 m/sec2
Distance covered by the body,
S = ut + at2 /2
= 0+ 2×625/2
= 625 m = 0.625 km
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