I’ll attach the question and markscheme below. I understand the energy part, but there are a few parts of the momentum explanation that i don’t quite understand.
“during the explosion, there are equal and opposite forces acting between the probe and the capsule” I assume this means that because the capsule has separated from the probe, it causes a force to be exerted against the probe, which in turn causes the probe to exert an equal and opposite force
“because momentum has to be conserved, and it is a vector, the capsule must move along the original line of movement after the explosion” this part i don’t understand. What does it mean?
Any help appreciated, thank you.