Asked by Janelle
What is the final velocity of a bus that accelerates at the rate of 30m per square for a period of 2 minutes?
Answers
Answered by
Reiny
your rate contains a typo in the acceleration rate
if you have 30 m/s^2 you got yourself some nasty superturbo-charged bus
If you have 30 m/min^2, you have yourself a slow chicken bus
anyway....
a = 30
v = 30t + c
assume it starts from zero,
0 = 30(0) + c , ----> c = 0
v = 30t, so depending what your units were, just plug in your given time
if it is 2 seconds
v = 60 m/s , which would be (60/1000) / (2/3600) hrs
or 108 km/hr , WOW
if it is 2 minutes
v = 60 m/min = (60/1000) / (2/60) km/h
= 1.8 km/h
very unrealistic question
if you have 30 m/s^2 you got yourself some nasty superturbo-charged bus
If you have 30 m/min^2, you have yourself a slow chicken bus
anyway....
a = 30
v = 30t + c
assume it starts from zero,
0 = 30(0) + c , ----> c = 0
v = 30t, so depending what your units were, just plug in your given time
if it is 2 seconds
v = 60 m/s , which would be (60/1000) / (2/3600) hrs
or 108 km/hr , WOW
if it is 2 minutes
v = 60 m/min = (60/1000) / (2/60) km/h
= 1.8 km/h
very unrealistic question
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