Unbalanced Force and Motion Flashcards
balanced forces
forces acting on object cancel each other out resultant force = 0
unbalanced forces
forces acting on object do not cancel each other out resultant force = something
newton’s first law of motion
if an object at rest or moving with a constant velocity in a straight line, the forces are balanced
if an object is accelerating, the forces acting on it are…
unbalanced
in which direction does an object accelerate in?
the direction of the force
newton’s second law of motion
acceleration of an object is directly proportional to the unbalanced force and inversely proportional to its mass f = ma
1 newton
the value of the unbalanced force which will accelerate a mass of 1kg at 1m/s
when an object is placed on a slope, the weight acts…
downwards
what can the weight force be resolved into for an object on a slope?
right-angle components mgsinO and mgcosO
law of the conservation of energy
energy cannot be created or destroyed, but can be changed from one form to another
energy equation
E = Pt
potential energy equation
E = mgh
kinetic energy equation
E = 1/2mv^2
work done equation
W = Fs
time =
work / power
