if a bus travelling at 20 m/s is subjected to a steady deceleration of 5m/s² , how long will it take to come to rest?
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initial velocity = 20 m/s
acceleration = -5 m/s²
final velocity = 0 m/s
so,
v = u + at
0 = 20 + (-5t)
-20 = -5t
4 = t
therefore time taken by the object to come into rest = 4 sec
i hope it helps.......
acceleration = -5 m/s²
final velocity = 0 m/s
so,
v = u + at
0 = 20 + (-5t)
-20 = -5t
4 = t
therefore time taken by the object to come into rest = 4 sec
i hope it helps.......
pahiroy1221:
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