Please help its homework

What are the factors that affect the resistance of a wire?

You are driving directly behind a pickup truck, going at the same speed as the truck. a crate falls from the bed of the truck to the road. (a) will your car hit the crate before the crate hits the road if you neither brake nor swerve? (b) during the fall, is the horizontal speed of the crate more than, less than, or the same as that of the truck?

How long will it take a car traveling of a constant speed of 45m/s to cover the distance of a 2.5km?