How is the thermal energy from the air surrounding the radiator transferred to the air in the rest of the room?

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.

In what direction does an applied force move an object

The earth exerts a gravitational force of 500 n on amy. what is amy’s mass in kg?