A truck travelling at 54 km/h is slow down to 36 km/h in 10 sec. Find the retardation
Answers
Answer:
Initial velocity = 54m/s
Final velocity = 36m/s
Acceleration = Final velocity - Initial velocity/time
Time given = 10 sec
Acceleration = 36 m/s - 54 m/s / 10 sec
Acceleration = -18/10
Acceleration = -1.8
Explanation:
The truck is travelling with a initial velocity of V=54m/s.
The truck is travelling with a final velocity of u=36m/s.
Acceleration=V-U/T.
Given time =10s.
so. 36-54/10
=-18/10
=-1.8
So. the retardation is 1.8 negative.
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Answer:
a= -4.4m/sec square answer, hence we can state the retardation is 4.4m/sec square. it means truck is slowing down at a rate of 4.4m per second
Explanation:
in this initial velocity u = 54km/h
final velocity v = 36km/h
formula we will apply here
v= u +at. here a is acceleration or retardation, and t is time
in given question velocity is given in km/h time is in seconds. (10 sec)
converting velocity from km/h to m/s
54km/h = 15m/sec ( multiply it with 5/18)
36km/h = 10m/sec
now putting values in the formula
v= u+at
10=54+ 10a
10-54= 10a
-44=10a
a= -4.4m/sec square answer