Physics - Forces and Accceleration

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

Resource summary

	Created by Abi Guest over 8 years ago