Question

Can someone let me know if I simplified these equations correctly or at least show me how to do it?

Answer 1

Your work is correct as far as it goes. Now eliminate the terms that are zero.

Explanation:

Multiplying anything by zero gives zero. Adding zero is like adding nothing. Zero is called the "additive identity element" because ...

a + 0 = a

Adding zero doesn't change anything. You can (and should) drop the zero if your goal is to simplify the expression.

`a. \quad x_(f)=v_(0)\\\\b. \quad x_(f)=v_(0)t\\\\c. \quad v_(f)^2=v_(0)^2`