How did the ancient Greek understanding of atomic particles likely influence Dalton's research?

At time t=0, a particle is located at the point (3,6,9). it travels in a straight line to the point (5,2,7), has speed 8 at (3,6,9) and constant acceleration 2i−4j−2k. find an equation for the position vector of the particle.

What is a good example of instantaneous speed

Acar travels 40m in 8 seconds find the car speed