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A car of mass 100 kg moving with a velocity of 36kmph hits a wall and comes to rest in 5 sec.Find the force exerted by the car on the wall.
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what is acceleration formula
its alrigth i got it
a=(v-u)/t
v is final velocity,
u is initial velocity
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as the given mass= 36kmph
let as convert it into mph
therefore
36×5/18
now u=36kmph
ti=0
t2=5
v=okmph
now let us know the acceleration
a=v-u
t2-t1
=0-36kmph
5-0
=-36×5/18
5
-36×5
18×5
a=-2
f=ma
100×2
200N
therefore F=200N
let as convert it into mph
therefore
36×5/18
now u=36kmph
ti=0
t2=5
v=okmph
now let us know the acceleration
a=v-u
t2-t1
=0-36kmph
5-0
=-36×5/18
5
-36×5
18×5
a=-2
f=ma
100×2
200N
therefore F=200N
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