Physics
When an unbalanced force acts on an object

Causes the object to move
The speed & direction of the object will change
Causes change in motion of the object
All of these

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Physics
Railway tracks are banked on curves so that

Necessary centrifugal force may be obtained from the horizontal component of the weight of the train
No frictional force may be produced between the tracks and the wheels of the train
The train may not fall down inwards
Necessary centripetal force may be obtained from the horizontal component of the weight of the train

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