Un automóvil que marcha con una velocidad de 72km/h frena de tal forma que 6s después del inicio de la frenada, su velocidad es de 8m/s. Calcular a) tiempo empleado por el automóvil hasta detenerse, b) distancia recorrida por el automóvil hasta detenerse

the answer would be   dignified - apex

see earlier answer

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.

you get 2.3=1.21*\frac{a}2 or 4.6=1.21a or a=3.802 (b)

explanation: