Newton's Laws

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Newton's Laws

'Work' is done when things are moved by a force. The unit used to measure work is called joules, and this can be calculated by multiplying the force applied by the distance travelled.


Why is a fast moving ball harder to stop than a slow moving one? The answer is momentum. The more of it you have, the faster you go. The amount of momentum something has is measured in kg,m/s, and can be calculated through the equation "Mass x Velocity = Momentum"




Speed and Velocity

-The First Law-An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

Distance is what is called a scaler quality and talks about how much ground a subject covered during motion. Displacement is what is called a vector quality and that refers to how far the subject is from their starting point to their final position.

Newton's Laws

-The Second Law-The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.

-The Third Law-For every action, there is an equal and opposite reaction.

Distance and Displacement

Scaler Quality- measures both size and directionVector Quality- measures only size



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