PLEASE HELP ME ASAP
WHAT AM I SUPPOSED TO DO??

What is the length x of the side of the triangle below? (hint: use the cosine function)

This is one type of line graph in which the independent variable is time plotted on the x axis and the dependent variable, also numerical, is plotted on the y axis.

Two carts, one of mass 2m and one of mass m, approach each other with the same speed, v. when the carts collide, they hook together. assume that positive momentum is to the right. which graph best represents the momentum of both carts over time, before and after the collision?