A bus running at speed of 18 km /h is stopped in 2.5 seconds by applying brakes . Calculate the retardation produced
Answers
Answered by
4
Answer:
Explanation:
initial velocity = 18 km/h = 18×5/18 m/sec
= 5 m/sec
[ km/h = 5/18 m/sec ]
final velocity = zero
acceleration = change in velocity/time
= ( final velocity - intial velocity)/time
= ( 0 - 5)/2.5 = -2 m/s²
so, retardation = 2m/s²
Answered by
1
Answer:
-2 m/sec^2
Explanation:
Intial velocity = 18 km/h
To convert km/h into m/sec we have to divide it by 5/18.
Therefore,
18 km/h = 18*5/18
= 5 m/sec
Final velocity = 0 (Bcoz the bus stopped)
Time Taken = 2.5 sec
Acceleration = Change in velocity/Time
= Final velocity - Initial Velocity / Time
= 0-5/2.5
= -50/25 = -2 m/sec^2 Ans.
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