Newtons law - SAC 1 Flashcards
Law 1 - Innertia
“A body will remain in its current state of motion unless acted upon by an external force”
Inertia is the tendency for a body to resist a change in its state of motion, whether that state is at rest or moving with a constant velocity.
The greater the mass of an object, the greater its inertia, and the greater force needed to change its state of motion.
Law 2 - Acceleration
“A force applied to a body causes acceleration of that body of a magnitude proportional to the force, in the direction of the force, and inversely proportional to the body’s mass”
Objects with a large mass have a large amount of inertia and are therefore difficult to accelerate.
Objects with a small mass need only a small force to be accelerated.
(F=ma)
Law 3 - Action - Reaction
“When one object exerts a force on a second, another force is applied back on the first object that is equal in magnitude and opposite in direction to the original force”
For every action, there is an equal and opposite reaction.
2 types of practices
- part
- whole
Part Practice
involves breaking down a skill into its parts/segments, and practicing each in isolation- useful for beginners when learning complex skills.
Whole practice
is the practice of the whole skill- useful for proficient learners and simple skills.
what type of practice is better for skills low in complexity but high in organisation
best learnt through whole practice
what type of practice is better for skills high in complextity and low in organisation
best learnt through part practice
complexity
the number of parts of a skill
organisation
the relationship between the parts
Massed Practice
When scheduling practice sessions- Involves fewer sessions that last for a longer period of time.
When considering practice trials- Involves minimal, or very short, rest periods.
Massed practice can become repetitive and boring for the learner, but has been shown to be more beneficial for the learning of discrete skills.
