Download Forces

yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project

Document related concepts

Free fall wikipedia , lookup

Electromagnetism wikipedia , lookup

Fictitious force wikipedia , lookup

Weightlessness wikipedia , lookup

Lorentz force wikipedia , lookup

Centrifugal force wikipedia , lookup

Gravity wikipedia , lookup

Centripetal force wikipedia , lookup

Any push or pull
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
• metric unit of weight
• = mass x force of
• = 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
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
• object moving might