we knew it's the start of the breaking section because the displacement we calculate which is : 18.3m is the start of the skid which is the start of the breaking
consider this we knew that :
Vf = 0m/s
a = 3.9m/s2
d = 18.3m
so we need to find equation that not include the time to find the initial velocity :
v2 = Vi2 + 2ad
i hope i understand your question right
Homework Statement
A rod of length D sits at rest on a friction less table. A ball of mass M strikes the end of the rod with a speed V and rebounds with a speed 3v/4 causing the rod to rotate counterclockwise around a fixed axis at one end. The rotational inertia of the rod is I
Homework...