Memory Anchor:

• Super Challenge:

  Stretch:

  Challenge:

Key Questions:

1. What is Newton's Third Law?
   • Newton's Third Law states that whenever two objects interact, the Forces they exert on each other are equal and opposite.
2. What would happen to an object if the resultant force acting upon it is zero and the object is stationary?
   • Newtons first law states that if the resultant Force acting on an object is zero and the object is stationary, the object remains stationary.
3. What would happen to an object if the resultant force acting upon it is zero and the object is moving?
   • Newtons first law states that If the resultant Force acting on an object is zero and the object is moving, the object continues to move at the same speed and in the same direction. So the object continues to move at the same velocity.
4. How can Newton's Third Law be applied to examples of equilibrium?
   • Every action has an equal and opposite reaction therefore if the external Forces are zero then every part of a system is zero, It will be in equilibrium
5. What is the equation that links resultant force, mass and acceleration?
   • F=ma Force, in Newtons, N mass, m, in kilograms, kg acceleration, a, in metres per second squared, m/s2
6. If the resistive forces balance the driving force what happens to the vehicle in terms of speed?
   • When the resistive Forces balance the driving Force the vehicle travels at a steady speed.
7. When will the velocity (speed and/or direction) of an object change?
   • The velocity (speed and/or direction) of an object will only change if a resultant Force is acting on the object.
8. How can Newtons first law be applied to the motion of an object moving with uniform velocity and objects where the speed and/or direction changes?
   • Newtons first law explains that Forces acting upon a body cause the motion of that body to change. When opposite Forces become unbalanced the objects speed and/or direction will change. When Forces are balanced and moving with uniform velocity the speed and/or direction will continue to remain the same.