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A cars weight affects its speed by varying its momentum. If the car has more weight, it has more momentum. With more momentum comes more inertia.(definition: inertia- an objects resistance to change in direction or movement) If the car has a lot of weight, it will speed up slower and stop slower because the cars inertia and momentum keep propelling it forward. If a car has less weight, it will speed up faster and stop faster because the momentum of the car is less than that of the heavier car. A: It is called the power to weight ratio.

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12y ago
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14y ago

Yes. A simple formula in computing the power output of a car is a Power:weight ratio. I.E, a car with less weight and more power will be faster.

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Q: Does the mass of the car effect the speed?
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