A car is traveling with a velocity of 80km/h slowed down to 44km/h in 15s. The retardation is????
Answers
Answered by
5
negative acceleration is called retardation
acceleration (a) = dv/dt
dv=change in velocity
dv= 44-80
dv=-36
dt=15
acceleration (a) = dv/dt
a= -36/15
a= -2.4km/hr
here acceleration is negative so it is called retardation
acceleration (a) = dv/dt
dv=change in velocity
dv= 44-80
dv=-36
dt=15
acceleration (a) = dv/dt
a= -36/15
a= -2.4km/hr
here acceleration is negative so it is called retardation
sambyalashna:
Tysm
ur welcome
we don't have to convert km/hr int m/s or what?
Yes u have to
Answered by
5
u=80 km/hr
=200/9 m/s
v=44 km/hr
=110/9 m/s
t=15 s
a=v-u/t
( 110/9-200/9)/15
=-10/15
=-2/3 m/s^2(the acceleration is in retardation)
=200/9 m/s
v=44 km/hr
=110/9 m/s
t=15 s
a=v-u/t
( 110/9-200/9)/15
=-10/15
=-2/3 m/s^2(the acceleration is in retardation)
its need to convert
2.4*5/18 =0.67
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