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4 cards from this section. Quick, good the night before a test.
What is a contact force? Provide an example.
Think about forces that resist motion.
Name a non-contact force.
This force affects all objects with mass.
What type of force is friction?
Consider whether friction requires contact to exist.
Is gravity a contact force?
Think about how gravity works from a distance.
A box is pulled across the floor with a force of 50 N, but friction opposes this with a force of 30 N. Calculate the net force acting on the box.
Use the formula: Net force = Applied force - Frictional force.
If you double the mass of an object, how does the gravitational force affecting it change? What does this imply for lifting the object?
Consider the relationship between mass and gravitational acceleration.
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