23. A car of mass 1000 kg moving at a speed of
80 km his brought to rest in 20 s by a constant
retarding force. Find the:
(a) retardation, and
[Ans. 1.11 ms]
(b) retarding force exerted on the car.
[Ans. 1110 N]
Answers
Answered by
4
Answer:
a=1.11m/s²,F=1110N
Step-by-step explanation:
m=1000kg
u=80kmph=80×5/18
=200/9m/s
v=0m/s
t=20sec
a=?
a=v-u/t
a=0-200/9/20
a= -10/9
a= -1.11m/s²
F=ma
F=1000×1.11
F=1110N
hope this helps you
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