Science is the intellectual and practical activity encompassing the systematic study of the structure and behaviour of the physical and natural world through observation and experiment.
Examples: anthropology, archaeology, astronomy, biology, botany, chemistry, cybernetics, geography, geology, mathematics, medicine, physics, physiology, psychology
Answer:
mass
Explanation:
The law of conservation of momentum states that within an isolated system, one of the quantities must be conserved no matter what happens. In the case of the question above, when two objects collide and separate from each other. Because of the collision and the removal of objects, it is not possible to keep the direction and speed that they assume constant. However, the mass of the bodies will be maintained at all times, before, during and after the collision; steadily.
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