Question
Tue May 08, 2012 By: Shreeya
 

A bus running at a speed of 20kmph applies brakes and stops after 1o seconds what is the retardation?

Expert Reply
Tue May 08, 2012
Change in speed=0-20 = 20kmph = 20000/3600 m/sec = 50/9 m/sec
time taken = 10sec
 
acceleration = change in speed / time taken
= 50/90 = 5/9 m/sec/sec
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