Physics can really trip you up if you're not careful! You can to remember all kinds of things, including triangles, significant figures, vectors, units, and so much more. Here's a video on some helpful hints to keep in mind as you go along:
Yay! You've completed this section! Now it's your turn to solve your own set of physics problems:
Yay! You've completed this section! Now it's your turn to solve your own set of physics problems:
Yes, you need to use vectors, and if you’re not familiar with how to break down a vector into its x and y components using trigonometry yet, there’s an introduction to them here a few lessons back: https://www.sciencelearningspace2.com/2014/10/using-trigonometry-with-physics/
Problem number 5 on the worksheet is giving us trouble. We didn’t understand how to split the Velocity into the X and Y components. So we initially got the answer wrong and then looked at your answer. We understand that you split the 73ft/s into X and Y by taking the 73sin45 and 73cos45. However, you say that those equal each other. We understand that they seem like they should equal each other since both are 45deg from the X and Y axis. However, when we type that into our calculators we don’t get the same thing and also we don’t get the same answer that you did. We can’t figure out how you got the 51.6ft/s. None of the calculations we can see in your answer give us the 51.6. We understand the rest of the problem, just not this very important initial step. Can you help?