Answer:
a) 5.2170 m/s
b) 2.1911 m/s, to the left
c) 3.0259 m/s, to the right
d) 0.2449 m
Step-by-step explanation:
Given parameters:





a) Here, the conservation of energy principle can be used.
where

So,

b) Here, the conservation of momentum principle can be used.

Here, our new
will be
found in part (a).

(-) sign means that the 2.03 kg ball after collision will bounce back in the left direction.
c) Here, we can use the conservation of momentum principle again.
. Here,
will be
found in part (a) again.

(+) sign means that the 4.97 kg ball after collision will swing to the right direction.
d) Here, we can use the conservation of energy principle again.
where
and

So,

