Acceleration of a mousetrap vehicle occurs because potential energy in the tensed spring is converted to kinetic energy (energy of motion) as the spring relaxes.
There are two basic forms of mousetrap vehicle, those which release the spring suddenly, and those which release it gradually. Those that release the spring suddenly generally have the quickly moving spring impact an object, commonly the track, which accelerates the vehicle forwards. Those that release the spring gradually often use the spring energy to cause drive wheels to turn, which also accelerates the vehicle.
because it is going uphill and the engine has to work harder?
simple: you get a mousetrap and some wood and some string and something for wheels and something for axles and you stick them all together!
Accelerate, motion is generated by applying force to mass.
have you checked to make shure that hte cruise control isn't on if your vehicle has one?
A mousetrap car is a small vehicle having only one form of motive power being from a mousetrap. Variations include the use of multiple traps, or very big rat traps, for added power.
You can use CDs, bottle caps, or small plastic wheels for a mousetrap racer. These items are lightweight and can easily be attached to the vehicle.
The side forces on the tires causes the vehicle to accelerate toward the center of the turn. If this doesn't answer your question, could you be a little more specific?
If it is a rear wheel drive vehicle it is either low oil in the rear end or an axle bearing. On a front wheel drive vehicle it is probably a bearing.
Well the vehicle is backfiring which can be caused by bad gas, spark plugs, or just needs some carburetor service.
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Speed, velocity.
If you accelerate and the transmission shifts to a lower gear of the overdrive disengages the RPMs will increase. If the vehicle has a manual transmission a slipping clutch will cause the RPMs to increase if the clutch is defective.