This video was very straight forward and clear in explaining impulse and momentum. Other videos i found got into more difficult physics and were between 10-20 minutes long. Not only were they boring to watch but i had no idea what was going on. This video was completely understandable and short enough that i was interested the whole time. The videos states that impulses equal the force applied to an object times the amount of time that forces is applied. It also states that the impulse equals the change in momentum and that the change in momentum equals mass times the change in velocity.
This video talks about how earth has a gravitational pull. It also says that the moon has a gravitational pull that pulls things such as the earth's water towards it. This causes tides. There are two types of tides. High tides and low tides. During high tides the water level rises and during low tides the water level drops. When the moon pulls the water, use picture as example, the top and bottom of the earth flatten out to compensate for the pull of the moon. The video also says the every six hours there is a tidal change.
