Which is most likely a chemical property?

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 will a positive and a negative charge do if they are separated from each other?

What is the temperature in degrees celsius of a substance with a tempature of 49k