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11 Cards in this Set
- Front
- Back
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Force
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It may be defined as a push or pull which changes the state of rest or uniform motion or direction of motion of a body.
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Balanced force
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If the resultant of several forces acting on a body is zero, the forces are said to be balanced.
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Unbalanced force
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If the resultant of the several forces acting on a body is not zero, the forces are said to be Unbalanced forces
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Inertia
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It is the inability of an object to change by itself its state of rest or uniform motion in a straight.
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Momentum
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Momentum =mass x velocity
p =mv |
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Newton's 1st law of motion
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Anybody at rest or in uniform motion will remain at rest or uniform motion unless an unbalanced force is applied ti change that state
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Newton's 2nd law of motion
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F=ma
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Newton (N)
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The S.I unit of force
1N =1kg m/s² |
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Newton's 3rd law of motion
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Every action has a equal and opposite reaction.
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Law of conservation of momentum
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m1u1 + m2u2 = m1v1 + m2v2
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Friction
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Whenever a body slides or rolls over the surface of another body, a force comes into action such acts in the opposite direction of the motion of a body. This opposing force is called Friction.
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