Answer:
Equilibrium. • When an object is in equilibrium (either at rest or moving with constant velocity), the net force acting on it zero.
Energy is neither created nor destroyed
E in = E out
750 J in so 750 J out
Physical science explains the physical world and not supernatural events and an idea is considered true by science if it can be observed, explained and reproduced by others.
<h3>What is physical science?</h3>
Physical science is a systematic study of the of the physical world and phenomena based on observation and experiments.
The scientific method involves:
- observation and questions
- hypothesis
- experiments
- results and further experiments
- theories and laws
Science explains the physical world and not supernatural events.
Science studies physical phenomena such as the stars, the planets, living things, etc.
Science do not study about angels or demons or supernatural events.
An idea is considered true by science if it can be observed, explained and reproduced by others.
Learn more about physical science at: brainly.com/question/4431224
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