Forces Any push or pull.

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Presentation transcript:

Forces Any push or pull

Forces any push or pull wants to change the motion of an object has size has direction can change speed can change direction unit is the Newton

Newton metric unit of weight = mass x force of gravity = mass x 9.8 m/sec2

Contact vs Non-contact Contact: there is contact between what is exerting the force and what is receiving the force Non-contact: the result is visible but you cannot see the contact between the force and the agent, example gravity

Net Force combination of all of the forces determined by the directions of the forces shown by vectors

Vector arrow attached to the receiver of the force length = magnitude of the force direction shown by the arrow head →, ↓, ↑, ←

Net force Forces in the same direction: add the forces together Forces in different directions: subtract the smaller force from the larger one

Balanced Forces net force = 0 no change in motion an object at rest will stay at rest

Unbalanced Force Net force ≠ 0 change in speed change in direction object at rest will move object moving might stop