PE Studies WACE cards

Impulse = Force x time

• Acceleration = force/mass
• or
• Acceleration = change in velocity / change in time

Force = mass x acceleration

Momentum = mass x velocity

Impulse causes a change in Momentum. It can either increase or decrease momentum.

A body remains at rest or in motion with a constant velocity unless acted upon by an external force.

Forces that touch an object to exert their force eg, applied force, air resistance, wind, normal force, spring force, tension force.

Forces that act without touching the object eg, gravity, magentic force and electricity. Most common in sport is gravity.

Gravity, possibly wind or crosswind and if the object is flying really, really fast then air resistence as well.

Something that has both a direction and a magnitude (shown in a free body diagram as an arrow) eg velocity or acceleration

• Preparation
• Observation
• Evaluation
• Intervention

Measure velocities, measure acceleration, measure forces, measure joint angles

Same as Impulse - the longer force can act on an object the more time the force has to build up and can generate more.

• Muscle can create ↑ force with a ↓ velocity of concentric contraction
• Muscle can resist ↑ force with a ↑ velocity of eccentric contraction

If the mass is close to the axis of rotation, rotation is easier. This makes the moment of inertia smaller and results in an increase in angular velocity. Moving the mass away from the axis of rotation slows down angular velocity.

Turbulent flow causes the boundary layer of air separation to take place later. This causes a smaller pressure difference between the front and back of the ball as their is only a small pocket of turbulent wake at the rear of the ball

Laminar flow causes the boundary layer separation to take place earlier. This causes a larger pressure differential between the front and rear of the ball as their is now a large pocket of turbulent wake at the back of the ball

The rate of change of momentum is proportional to the imposed force and goes in the direction of the force

Design a battery of fitness tests that are specific to your sport and have norms for each of these components of fitness such as stork stand, 30m sprint, grip strength or 1RM max, sit and reach or shoulder stretch. Pre and post test with some sort of intervention. Compare results to norms and sport requirements.

Have the right attitude, set goals, establish motivation, work as a team (support each other), positive self talk, mental imagery, deal with anxiety, deal with emotions, ensure optimal arousal, block out distractions and maintain focus and concentration.

Periodisation - split year into phases and cycles, work on skills in each phase, ensuring peaking and being careful of overtraining.

A plan that aims to train the whole athlete, the whole person. Physiology, biomechanics, mental skills, nutrition, skills, team, leadership etc.

• The turning effect produced when force is applied to a rotational axis. T = F * d, where
• T = Torque
• F = Force (here, the force applied perpendicular to the axis)
• d = Distance

• A measure of an object's resistance to changes in rotation direction. Moment of
• Inertia has the same relationship to angular acceleration as mass has to linear
• acceleration. I = m r2 where I = moment of inertia, m = mass, r = distance between axis and rotation mass