If the only force acting on an object is friction during a given physical process, which of the following assumptions must be made in regard to the object's kinetic energy?

The assumptions must be made base in the object’s kinetic energy in a situation whereby frictional force is the only force acting on an object is A:The kinetic energy decreases.

Therefore, option A is correct.

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The kinetic energy decreases.

Explanation:

Friction is defined as a opposite force to motion. If friction is the only force acting on an objects, its kinetic energy decreases.

It is so because due to resistive force or friction, kinetic energy is converted to heat energy and that reduces the total kinetic energy in the system.

Hence, the correct answer is "The kinetic energy decreases."

answer: the correct answer is   air pressure at the top of mount everest is higher than at the bottom of the grand canyon.

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explanation:

5 w for 1hr = 5x60x60 joules=300x60=3000x6=18,000j as total energy conversion. efficiency of bulb needed for radiant to thermal within 18000