A bus and a car start from rest and run along a straight line with constant acceleration of 2m/s2 and 3m/s2
respectively, with the car behind the bus at distance of 100 m. How long will it take before both the bus
and car travel side by side.
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Answer:
14.1421 s
Explanation:
u of bus = u1 = 0
u of car = u2 = 0
a1 = 2
a2 = 3
relative acceleration of car = a2 - a1 = 3 - 2 = 1 m/s^2
For the car,
u = 0, a = 1, s = 100, t = ?
Distance between = 100 = s
s = ut + 1/2at^2
100 = 1/2 x 1 x t^2
100 x 2 = t^2
= t
10 = t = 14.1421 seconds
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