A van of mass 1600 kg was moving at a velocity of 16 m/s when it was involved in a head on collision with a wall. Assuming that the van came to stop after the collision,
a. find the change in momentum of the van
b. if the van took 0.2 s to stop, what is the force that acted on each driver.

find the change in momentum of the van

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.