A man is 48m behind a bus which is at rest. The bus starts accelerating at the rate of 1m/s2, at the same time the man starts running with uniform velocity of 10m/s. What is the minimum time in which the man catches the bus?
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Answer:
Given,
Acceleration of bus, a=1ms−2
Assume man catches the train in timet.
Displacement by man in time t s1=vt=10t
Displacement by bus in time t, s2=ut+21at2=2t2
Separation between man and bus is 48m
s1=s2+48
10t=2t2+48
t2−20t+96=0
t=220±202−4×96
t=8and12
In first attempt he caches the bus
Hence, minimum time he catches the
HOPE YOU UNDERSTOOD!!
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