50 points for this worksheet

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

Write down two additional questions about earth's magnetic field that will make your presentation more informative.

Consider two less-than-desirable options. in the first you are driving 30 mph and crash head-on into an identical car also going 30 mph. in the second option you are driving 30 mph and crash head-on into a stationary brick wall. in neither case does your car bounce off the thing it hits, and the collision time is the same in both cases. which of these two situations would result in the greatest impact force?