1. An 18 wheeler and a sports car in adjacent lanes at any given moment. If the car's speed is faster than the trucks speed, which of the following must be true about the car's velocity... a) its increasing b) its in the direction of the truck c) its zero d) none of the above I said it was d because the truck and car are side by side. Even though the car is going faster, it can have a negative velocity which means the driver is pushing the brake pedal to stay in line with the truck. So I was thinking the velocity was decreasing but Im confused if its right or not. 2. A bullet takes 8 milliseconds to accelerate the entire length of the gun barrel. When the bullet leaves the barrel, it has a velocity of 240 m/s. Assuming that the bullet has a uniform acceleration, what is the length of the barrel? I was really lost with this one. I know final velocity is 240 and beyond that Im confused.