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Force and Motion
Revision for the topic of force and motion for JC students.
Question | Answer |
---|---|
What is the definition of a force? | A force can cause an object to change its velocity. |
How is a force measured? | With a spring balance. |
What's the unit of a Force? | Newton. |
What is the moment of a force? | The force multiplied by the perpendicular distance from the point of the force to the point where the object will turn. |
What force allows us to walk on earth? | Gravity |
What is the weight force equal to? | Mass x Gravity |
What is the net force of an object equal to? | Mass of the object x Acceleration of the object. |
What is the name of the force that slows things down? | Friction |