Weight and Drag
gravity
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Resistance force is the force which an effort force must overcome in order to do work.
Pulley
The electrostatic force of attraction between the positive nucleus and the negative electron must.
Gravity
think the answer is the word in your herat
gravity
An unbalanced force is a force that causes change in motion. A force must also overcome friction before an object will move.
Krypton is gas and does not need melting.
To overcome the objects inertia
To overcome the objects inertia