A bus starting from rest moves with a uniform acceleration of 0.1 m s−2 for 2 minutes. Find (a) the speed acquired, (b) the distance travelled.
Initial speed of the bus, u= 0
Acceleration, a = 0.1 m/s2
Time taken, t = 2 minutes = 120 s
v= u + at
v= 0 + 0.1 × 120
v= 12 ms–1
(b) According to the third equation of motion:
v2 – u2= 2as
Where, s is the distance covered by the bus
(12)2 – (0)2= 2(0.1) s
s = 720 m
Speed acquired by the bus is 12 m/s.
Distance travelled by the bus is 720 m.
