# A car moving with a velocity 20 m/s is came to rest by applying the brakes in 5sec. Calculate reterdation and the distance travel by the car?

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by prayanka

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by prayanka

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initial velocity<u> as 20 m/s

final velocity<v> as 0 m/s as car breaks and time<t> is 5 sec

acceleration<a>= (v - u)/t ,

a= (0 - 20)/5,

a= -4 m/s(sq) here ' - ' sign shows .

And displacement<s>

,

s= (0 - 400)/(2*< - 4>) ,

s=50 m <ans.>

final velocity<v> as 0 m/s as car breaks and time<t> is 5 sec

acceleration<a>= (v - u)/t ,

a= (0 - 20)/5,

a= -4 m/s(sq) here ' - ' sign shows .

And displacement<s>

,

s= (0 - 400)/(2*< - 4>) ,

s=50 m <ans.>