Question

Define Mass. What is Its SI unit​

Answer 1

The SI unit of mass is the kilogram (kg). In science and technology, the weight of a body in a particular reference frame is defined as the force that gives the body an acceleration equal to the local acceleration of free fall in that reference frame.

Answer 2

Mass

• It is the most fundamental feature of matter and one of the fundamental quantities in physics.
• Mass can be described as the quantity of matter contained in a body.
• Kilograms are the SI unit.
• The mass of a body does not change at any moment. Only in extreme cases where a huge amount of power is supplied or taken from the body.
• For example, in a nuclear reaction, a small amount of matter is turned into a massive amount of energy, resulting in a reduction in the amount of substance.