A car at rest accelerates uniformly to a speed of
144 km/hr in 20 s. Find the distance covered by it.
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Step by step explanations:
Given,
Initial speed of the car(u) = 0
final velocity = 144 km/h = 144 × 5/18 m/s
v = 40 m/s
t = 20s
so,
acceleration (a)
a = (v - u)/t
a = 40/20
a = 2 m/s²
now,
distance travelled(s) = ut + ½at²
putting the values,
s = 0(20) + ½(2)(20)(20)
s = 400 m
so,
Distance travelled = 400 meter
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