0:00
Alrighty.
00:01
So we have two different situations in this problem, and we're comparing to the kinetic energies for each situation.
00:06
So we have our first situation, which i'll write in red here.
00:10
Situation one.
00:11
You have a particle, and it's got a mass of m, and it's got a speed of 2v.
00:20
2v.
00:21
Okay? you have a second particle.
00:26
This guy has a mass of 2m.
00:30
This time, though, it's got a speed of just v.
00:36
So let's see how they compare.
00:37
So we know for writing my kinetic energy here, i'll keep this blue for the second one, i'll write as two here as well.
00:45
That will then be equal to 1 half 2m for the mass v squared.
00:52
Let's write the red here and meet that...