Forces Flashcards
Example of a contact force
Friction, buoyancy, applied
Example of non contact
Gravitational, magnetism
What unit is a force measured in
Newtons (N)
What is used to measure a force
Forces are measured using a springs balance
Examples of a balanced force
A book resting on a table. Has to be still or moving at a constant rate
Examples of an unbalanced force
Something accelerating, a car starting to go at a green light
What is an unbalanced force
A foxe that changes the motion, speed, direction or shape of an object
If the arrow on a digram showing forces is large…
Then it has a large amount of force acting upon it
When does friction operate in the opposite motion and produces heat
A book rubbing against a table, back and forth
What is the gravitational force of an object based on?
The mass of the object determines how much gravitational force an object has
Tech examples of solutions to reduce forces
Air bags - reduce the impact of the car stopping suddenly
Shock absorbing materials like foam and rubber. Used in shoes or helmets
What makes two magnets attract
A north pole and a south pole. Opposites attract eachother.
What for is involved when two magnets are near
Magnetism, a non contact force
What is a magnet field?
An area around a magnet where the force exerted by the magnet is felt
Where are magnetic fields the strongest
Near the poles (North and south)
