Lewis Ng's answer to Ahtziri's Junior College 1 H3 Maths question.

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Lewis Ng
Lewis Ng's answer
30 answers (Tutor Details)
4V due to conservation of momentum

https://www.facebook.com/SmallGroupTuitionAtAdmiralty/