
Alfonso's average speed was 400 meters per minute.
One of the most important sources of energy is the sun. The energy of the sun is the original source of most of the energy found on earth. We get solar heat energy from the sun, and sunlight can also be used to produce electricity from solar (photovoltaic) cells
1) Renewable energy
energy from a source that is not depleted when used, such as wind or solar power
2) non renewable energy
A non-renewable resource is a natural resource that cannot be readily replaced by natural means at a pace quick enough to keep up with consumption

Answer:
A the mass of the object is too small
Explanation:
If the masses of the objects are too small, then the interaction between the two is hard to detect.
Hope this helps! I tried my best!
1.F
2.T
3.F
4.T
These are the answers hope it helps