What are four factors that led to the fall of communism

Vehicle #1 skidded 50 ft before impact with a drag factor of 0.80, how far from impact was vehicle #1 when vehicle #2 first began to accelerate from being stopped?

If the light is green as you approach an intersection, you should: a. cover your brakes b. expect it to change soon c. speed up to enter the intersection

How can you tell that you're driving in the right direction? options are a. there is a white line on your left and a yellow line on your right. b. there are yellow lines on both sides of your vehicle. c. there is a double yellow line on your right. d. there is a yellow line on your left and a white line on your right.