Question

what is force , external force, net force​

Answer 1

Answer: Force : strength or energy as an attribute of physical action or               movement.

External Force : External forces are forces caused by external agent outside of the system.

Internal Force: Internal forces are forces exchanged by the objects in the system.

Explanation:

Answer 2

$\huge\underline\mathfrak\red{Answer}$

$\huge\underline\mathfrak\blue{Force :}$

Force is an interaction, when unopposed will change the direction of motion of the object

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$\huge\underline\mathfrak\blue{External / Force}$

Force caused by external agents outside the system is called External force

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$\huge\underline\mathfrak\blue{Internal \ force}$

Internal forces are forces exchanged by the objects in the system.

. I hope this will help ❤