Answers (cont.)
n
2.) Use p
before
=p
after
n
P
before
=0kg.m/s + 2kg.m/s(right)
n
=2kg.m/s(right)
n
n
P
after
=2kg.m/s(right)=3kg.m/s +
n
P
(0.2kg cart)
so….p of 0.2kg cart
must be -1kg.m/s or
1kg.m/s(left)
n
more…..