PHYS20009 Lecture 1: Lecture 1

A laser pointer used in a lecture hall emits light at 650 nm. What is the frequency of this light?

I have an upcoming exam that will involve BallisticCollisionProblems and when I downloaded the lecture the ballisticcollisionequations were unreadable; I am just looking to get theequationsand continue working on practice problems

In a very popular lecture demonstration, a projectile is fired at a falling target as shown in the figure. The projectile leaves the gun at the same instant the target is dropped from rest. Assuming the gun is initially aimed at the target, show that the projectile will hit the target.