The phrase "positive to positive, negative to ground" is correct when jump starting a car

When an object is heated it contracts. a. true b. false

If the force applied to an object remains constant, is more power needed for the object to move faster ? explain

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?