Secondary School·
Science·
13+7 pts ·
A car is moving with a velocity of 16 m/s when brakes are applied .The force applied by the brakes is 1000N.The mass of the car its passengers are is 1200kg.
a) How long should the brakes be applied to make the car come to halt?
b) How far does the car travel before it come to rest
Answers
Answered by
12
a)....
as v=u+at
0=16 +(-1000/1200) t ( as acc=F/m)
16=10/12 t
8=5/12 t
t=96/5=19.2 seconds
b)))
using V^2_u^2=2as
0^2 - 16^2 =2 (-10/12)s
256× 12/20=s
s=12.8×12=153.6 m
as v=u+at
0=16 +(-1000/1200) t ( as acc=F/m)
16=10/12 t
8=5/12 t
t=96/5=19.2 seconds
b)))
using V^2_u^2=2as
0^2 - 16^2 =2 (-10/12)s
256× 12/20=s
s=12.8×12=153.6 m
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Answered by
4
a) v=u+at
0=16 +(-1000/1200) t
8=5/12 t
t=96/5
=19.2 seconds
b)
using V^2_u^2=2as
0^2 - 16^2 =2 (-10/12)s
256× 12/20=s
s=12.8×12
=153.6 m
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