the higher the mass of the start faster is its rate of
Answers
Notice that here we focus on linear speed.
Let me raise a related question.
How does a particle (or object) go faster and faster? The answer is that it should be accelerated and acceleration is defined by Newton’s second law:
If force F is applied to a particle (left side of equation 1), the momentum of the particle changes (right side of equation 1).
Really, why mass increases as you go faster and faster?
Classical mechanics can not answer this question, but quantum mechanics can.
The Standard Model of particle physics describes the universe in terms of Matter (fermions) and Force (bosons). Particles of matter transfer discrete amounts of energy by exchanging bosons with each other. [1]
Therefore, in modern physics, force (interaction) is defined by the transmission of discrete amount of energy. At least, moving energy has mass that is given by m=E/c^2. [2]
It means, when a force (discrete amount of energy) applied to a particle, it does not only change its speed, but it also changes its mas