Force
From Conservapedia
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Force is defined as rate of change of momentum of a body . F= dp/dt , p= mv , F= ma where F stands for total vector sum of all forces , m for mass of the object, a for its acceleration expressed as a vector, p stands for momentum vector and v for velocity vector. It was stated first by Sir Isaac Newton.
When the velocity of the object approaches light speed it's effective mass changes. Then it is expressed as
The types of forces are
1. Electro-magnetic force 2. gravitational Force 3. Strong force 4. weak force
