1.4 - Work & Energy Flashcards
A ______ can be considered a push or pull
Force
The unit for force is the ______
Newtons (N)
Force formula
Force = mass x acceleration
N = kg x m/s^2
“One newton equals one kilogram metre per second squared”
When the forces acting on an object are ______, it will remain at a constant velocity
Balanced (equal in magnitude and opposite in direction)
To lift a ball up at a constant speed, you must apply a force that is equal to the force that ______ pulls on the ball with
Gravity
If the forces acting on an object are unbalanced, then the object will ______
Accelerate
The direction of acceleration on an object will be in the direction of the ______ force
Strongest
Forces can be used to ______ energy, or ______ energy from one form to an other
Transfer
Convert
______ and ______ are two concepts that are very closely related or one another
Work
Energy
______ is the ability to do work
Energy
______ is the transfer of energy from one object to another or from one form of energy to another
Work
Work formula
->
W = F d
J (joules) = N (applied force) x m (distance the object moves)
Direction must match direction of force otherwise, work isn’t being done
Breakdown of joule
1 J = 1Nm
1 J = 1(kgm/s^2)(m)
1 J = 1kgm^2/s^2
Work is a transfer or conversion of _____
Energy
Work (energy) input can be calculated with the _____ formula
Work
