A1,200-kg car is pulling a 315-kg trailer. together, the car and trailer have an acceleration of 2.10 m/s2 in the positive x-direction. neglecting frictional forces on the trailer, determine the following. (indicate the direction with the sign of your answer. assume forward motion is along the positive x-axis and upwards is along the positive y-axis. assume the trailer's weight is entirely supported by it's own ) determine the net force on the car.

The net force on the car is equal to 661.5 N.

Why?

We need  to calculate the net force on the car and not the exerted by the trailer on the car. However, if we were asked to calculate the force exerted on the car by the trailer, we must remember that  ar is pulling (and moving) the trailer, the net force exerted by the car on the trailer will be the same (with opposite direction) that the force exerted by the trailer on the car.

So, calculating we have:

Hence, we have that the net force on the car is equal to 661.5N.

Have a nice day!

freezing

deposition

condensation

explanation;

melting also called fusion is the process where solid becomes liquid, sublimation is the process where solid becomes gaseous without first changing to liquid, deposition involves change from gaseous to solid state, freezing involves change from liquid to solid, boiling or evaporation involves change of liquid to gaseous state, while condensation is the change from gaseous state to liquid state.

endothermic reactions involves absorption of heat from the surroundings or the environment while exothermic reactions involves loss of heat energy to the surroundings.

in this case, sublimation, evaporation and melting are endothermic reactions (gain energy from the environment) while, freezing, deposition and condensation are exothermic (loss of energy to the surroundings) reactions.