an engine
what
gravity
The lift and thrust force makes an airplane go faster.
heat which makes it move faster.
convection
it makes them move faster or vibrate
the smaller they are the less resistance to water and the faster they move.
force of gravity
When the tow truck makes contact with another vehicle it is in possession of that tow/repo company. If they connect to another vehicle to "move" it they are in possession of that vehicle without cause or permission. This is technically a stolen auto at that time. It is NOT legal to move other vehicles to get to another. A good repossession agent with proper use of his tools can get a vehicle out of even the most tightly squeezed places. Before you accuse a repo agent of "stealing" a vehicle, make sure he actually did!!!
In warmer water, particles generally have more energy. This makes them move faster, and so spread out faster.
Gravity, until terminal velocity is achieved.
what makes the lunar rover go is that you go into the vehicle bay and move the big thing at the top to the right.[using the little thing with the sun on it on the right.] then move the "light catchers" from one to another.[there are 3 of them] at the last light catcher move the light from the catcher on to the rover. that's what makes it go.