Question

what is a force that opposes motion when two objects are in contact with each other called?
gravity
friction
force
energy
question 2
1 pts
what type of energy is formed when an object encounters friction?
radiant energy
nuclear energy
thermal energy
kinetic energy
question 3
1 pts
the law of conservation of energy states that energy can be transformed from one form to another, but it cannot be____ or____
created, destroyed
radiated, conducted
changed, destroyed
created, changed

Explanation:

• For the first question: Friction is defined as the force that opposes the relative motion between two objects in contact. Gravity is a force of attraction between masses, force is a general term for a push or pull, and energy is the ability to do work.
• For the second question: When an object encounters friction, thermal energy (heat) is produced due to the rubbing and resistance. Radiant energy is energy from electromagnetic waves, nuclear energy is from nuclear reactions, and kinetic energy is the energy of motion.
• For the third question: The law of conservation of energy clearly states that energy cannot be created or destroyed, only transformed from one form to another. The other options do not fit this fundamental law.

Answer:

1. Friction
2. Thermal energy
3. created, destroyed