They could: it depends on where they are placed.
Not as much as the shape of the car but different finishes do affect drag.
Yes it will affect the speed of the toy car. Example: A buggy is easier to push without any groceries in it.
average car weights about 3500 lbs and a heavy "car" weights about 5000 lbs
effect of force
Aerodynamics, horse power, gear ratio,
Police use radar technology to measure the speed of a car by sending out a radio wave towards the vehicle. The radio wave bounces off the car and returns to the radar unit. The Doppler effect causes a shift in the frequency of the returning wave, allowing the radar unit to calculate the speed of the car based on this frequency shift.
Wheel balancing weights are made from lead.
No, but it could effect how the transmission shifts.
it allows it to go up
The weight of a car affects its speed by influencing its acceleration and braking performance. A heavier car may have slower acceleration due to its increased inertia, but it may have better traction and stability at higher speeds. However, excessive weight can also result in decreased fuel efficiency and overall performance.
If you are talking about a car rolling down a ramp then yes. The taller the ramp the more momentum the car will create there for the car will travel farther and faster.
yes, of course different surface different amount of friction