Flashcards in Definitions Deck (18):
A quantity with magnitude only.
A quantity with magnitude and direction.
A force exerted when objects are physically touching.
Non contact force
A force exerted when objects are physically separated.
Centre of mass
A point where the weight of an object may be considered to act. Usually in the middle of the object.
The energy Transferred by a force.
How much an object has increased in length.
The turning Effect of the force
How far an object moves
Distance and direction from the start point to the finish point, in a straight line.
How far an object moves per second
Eg 5m per second
Speed in a specific direction
The rate of change of velocity
Acceleration due to gravity
The velocity when the resultant force equals 0.
Eg when the air resistance is equal to the gravitational acceleration. Both act against each other and the resultant force is zero.
Newton’s first law
If the resultant force is zero, then an object will continue to move at the same velocity.
Newton’s second law
The acceleration of an object is proportional to the resultant