Question

how do you figure out the frictional force of an object when its decelerating? 0.o

Answer 1

apply any one out of the three newton's equations
\[s=ut+1/2at^{2}\]
\[v=u+at\]
\[v ^{2}=u ^{2}+2as\]

you will get the deceleration(or acceleration with negative sign)
apply newton's second law(F=ma)

Answer 2

haha cheers thanks a lot