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- A force can change the shape of an object or change its motion or its state of rest
-The unit of force is newton (N)
-When 2 objects interact, they always exert equal and opposite forces on each other.
- The bigger the resultant force on an object is, the greater the acceleration is
- The greater the mass of an object is, the smaller its acceleration is given for a force
- Friction and air resistance oppose the driving of a car
- The stopping distance of a car depends on the thinking distance and the braking distance
- The terminal velocity of a falling object of the velocity it reaches when it is falling in a fluid. The weight is then equal to the drag force on a object
