Zusammenfassung der Ressource
Physics - Forces and
Accceleration
- An object needs a force to start
moving
- If the resultant force on a stationary object is zero, the
object will remain stationary
- No resultant force means no change is velcoity
- If there is no resultant force on a moving object it will just carry on moving at the same velcoity
- When an object is moving at a constant
velocity then the forces on it must all be
balanced
- To keep going at a steady speed
there must be zero resultant force
- A resultant force means acceleration
- If there is a non-zero resultant force,
then the object will accelerate in the
direction of the force
- A non-zero acceleration will always
produce acceleration (or
deceleration)
- This acceleration can take five different forms:
- Starting
- Stopping
- Speeding up
- Slowing down
- Change in direction