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Definition: PUSH or a PULL upon an object.
if there is a ball in the ground but it does not move that still mean it has force: gravitational force.
If somebody kick the ball and it starts moving and that is displacment and when it stop that is friction.
If an object is moving that means there is no net force.
3 m/s : normal force
Ball
Gravitational force
From what is happening in the top there is 4 types of forces.
Normal force
friction force
external force
gravitational force
At rest
(stationary)
______Normal force________________ = Floor weight = (w= m x g) gravitational
///////////////// field
Gravitational force = weight/ gaya berat v= 0 m/s g= 9.8 m/s2
It is always perpendicular with the object that we have.
o=ball. if it move it will have a certain velocity.
2. ______________________________________ if the ball is kick it will move= external force
gravitational force and normal force.
Up= normal force normals and gravity
forces and horizontaly
left= external force
down= gravitational force if it stop and the ground is not smooth it is because friction.
Nico= pushing box
_______________________________________
friction force in PHY=f
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