Forces Flashcards
When a force moves an object through a distance …
Energy is transferred and work is done on the object
What does the thing applying the force need
A source of energy
Work done (J) =
Force (N) X distance (m)
1J =
1Nm
When is one joule of work done
When a force of 1 newton causes an object to move a distance of ONE METRE
Weight (N) =
Mass(Kg) X GFS (N/Kg)
What effect does gravity have (2)
- it make all things fall towards the ground
- it gives everything a weight
What is distance
How far the object had moved
What quantity is distance
Scalar- it doesn’t involve direction
What is displacement
It measures the distance and direction in a straight line from an objects starting point to its finishing point
What quantity is displacement
A vector quantity
What is velocity
Speed in a given direction
How does an object have CHANGING velocity
When the object is changing direction it staying at the same speed
What 4 things can affect speed
- fitness
- age
- distance travelled
- terrain
What can wind speed be affected by
- temperature
- atmospher
