A200 kg object is going 4m/s. find its kinetic energy

The Kinetic Energy of the given object of mass 200 kg, traveling at 4 m/s is found to be 1600 J (OR) 1.6 KJ.

Explanation:

The generalized formula to find the Kinetic Energy of a body, that is in motion, is as follows:

Kinetic Energy = K.E = (1/2)mv²    eqn (1)

where,

m = mass of the object = 200 kg

v = speed of the object = 4 m/s

therefore, substituting these values, in eqn (1), we find the kinetic energy of the given object, as follows:

eqn (1) =>

K.E = (1/2)(200 kg)(4 m/s)²

K.E = 1600 J

OR

K.E = (1600 J)(1 KJ/1000 J)

K.E = 1.6 KJ

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.