Almost always. Unless the airplane happens to be an ultralight, or the car happens to be a Hummer.
The engine and other components are at the front of a vehicle. This makes the front heavier and is why tires wear quicker in front.
engine
The question is not weight, it is the rolling resistance of the compartments, AND the traction of the engine on the rails. Think of this- I cannot pick up a car, but on level ground I can PUSH a car. And I weigh far less than my car.
train, airplane.
A car?
The train is heavier than the car is and the train has more things in the back. The train is heavier than the car is and the train has more things in the back.
A heavier car does not necessarily go faster than a lighter car. In fact, factors such as engine power, aerodynamics, and tire grip have a more significant impact on a car's speed. A lighter car may actually accelerate more quickly due to its lower weight.
The water cooled engine will typically be heavier, because you have to add in the water pump, the radiator and the water/coolant. The engine block itself may be lighter as there are passages drilled out for the water/coolant to flow through.
well just imagine that you are building a car, or a train or an airplane and the metal you use for something starts to rust, if that's near the engine or something that leads to the engine than it could put set the car a light.
It depends on the type of rocket.
The mass of a toy car will affect its speed. A lighter car will accelerate faster than a heavier car, assuming all other factors (such as the force applied) are constant. However, once in motion, a heavier car may maintain its speed better due to its inertia.
It takes longer for a heavier car to stop than it does a lighter one. Velocity increases as mass increases in turn increasing the time needed to stop (trains, semi trucks).