Hi. I haven't done physics for over a year and a half now, but my friend is taking the class. He asked for my help, but I really didn't know how to help him. Here are the questions...(adsbygoogle = window.adsbygoogle || []).push({});

1) Show how Delta y = (1/2)* (tan theta) * delta x

and why Delta y= (1/2) * delta y prime

2) Show why delta x is maximized for a given velocity when theta is equal to 45 degrees.

This is two dimensional motion. Here is the diagram:

Delta y Prime

| /\

| / \

| / \

| / \

| / \

| / \

|/ \

|-------------------------------

Delta X

The projectile motion is a line going from the beginning of the triangle, to the center of it, to the end of it. Delta Y is in the middle of Delta y prime and the middle of the triangle.

Sorry for the crude diagram. Please help!

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# Homework Help: Two Dimensional Motion Projectile

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