00:01
So this problem has a lot of little bits and pieces.
00:04
So first of all, if we know that we're solving for the kinetic energy, we're going to need the fact that we know kinetic energy is one half mass times velocity squared.
00:14
The information that the problem gives you is we have a 5 .25 ounce of the velocity of basically 100, 1 times 10 of the second miles per hour.
00:28
So the problem comes in is that things aren't in the correct unit.
00:33
Our mass is in ounces and not kilograms.
00:36
Our velocity is in miles per hour instead of meters per second.
00:40
So what we're going to need to do is actually convert our mass to kilograms first and our velocity to meters per second before we can plug them into our equation.
00:50
So let's take care of the mass first.
00:53
So our mass is 5 .25 ounces.
00:57
So we need to get from ounces all the way to kilograms.
01:04
So we know that there's 16 ounces in a pound and that there's 2 .205 pounds in a kilogram.
01:14
So that gives us 0 .149 kilograms...
