Question

The brakes applied to car produce an acceleration of 6m/s2 in opposite direction to the motion . if the car takes 2 seconds to stop the application of brakes .calculated the distance it travel during this time

Answer 1

heya mate here is ur answer

given:. acceleration = 6ms^-2

time= 2s

then by Newton's equation of motion we have
v= u+ at

since v= 0

it becomes
u= -at

u= -6×2

u=-12ms^-1


then distance travelled while brake applied to still it stops is given by

v^2-u^2=2as

since , v=0

(-u)^2= 2as

(12)^2= 2×6×s

144= 12s

s= 144÷12 = 12m

hope it helps u

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