The kinetic energy of an object with a mass of 6.8 kg and a velocity of 5.0 m/s is [blank] j. (report the answer to two significant figures.)

The answer is:

The kinetic energy of the object is equal to 85 J.

The kinetic energy involves the speed and the mass of an object in motion. We can calculate the following the work needed to speed an object (kinetic energy) using the equation:

Where,

m, is the mas of the object

v, is the speed of the object.

Now, we are given:

So, substituting and calculating the kinetic energy of the object, we have:

We have that the kinetic energy of the object is equal to 85 J.

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.