Suppose that an object slows down while moving horizontally. in this situation, the
object's kinetic energy would _, its potential energy would _, and its total
mechanical energy would
enter the three answers in their respective order without any commas or spaces between
letters.
a. increase
b. decrease
c. remain the same
d. nonsense! it is impossible to tell without more information.

Explanation:

Energy

It is ability to do work

It is of different types out of which mechanical energy is also one of the type .

Mechanical energy

It is the energy possessed by body due to its position or motion .

It is of two types :

Kinetic energy

Potential energy

Potential energy

It is the energy possessed by body due to its position or state .

It is given by P.E =mx gx h

Kinetic energy

It is the energy possessed by body due to its motion .

It is given by K.E=1/2 mv²

Law of conservation of energy

It states that energy can be converted from one form to another but total energy of the system remains same .

That is why : in above asked question ,when body is moving it has kinetic energy , when stops the kinetic energy gets converted to potential energy , but the total energy of system remains same .