Question

the brakes applied to a car produces an acceleration of 6 m per second square in the opposite direction if cartas De seconds to come to the rest after the application of brakes calculate the initial velocity and distance before the car stopping

Answer 1

take the final velocity be 0
a=6
t=3
formula
v=u+at
0=u+6×3
0=u+18
u=18ans

s=ut+1/2at2
s=18×3+1/2×6×9
s=54+27
s=81.aswer