VCE PE Random Revision #7

What is an appropriate progression for a Year 12 Physical Education student whose weight training program consists of 8 repetitions and 3 sets?

• 8 repetitions, 4 sets

• 10 repetitions, 3 sets

• 9 repetitions, 4 sets

• 9 repetitions, 3 sets

Answer explanation

The question is about the right progression for a Year 12 Physical Education student's weight training program. The correct answer is to increase the repetitions while maintaining the same number of sets. In this case, from 8 to 9 repetitions, but keeping the 3 sets the same. This is a well-established method for gradually increasing the intensity of a workout without affecting the volume.

The energy substrate stored in the body which can produce the most amount of ATP is

• Triglycerides

• Phosphate creatine.

• Muscle glycogen

• Liver glycogen

Answer explanation

Triglycerides are the primary form of energy storage in the body. They have a high energy content and can produce more ATP than Phosphate creatine, Muscle glycogen, and Liver glycogen. Therefore, the energy substrate which can produce the most amount of ATP is Triglycerides.

The equation for moment of inertia is:

• Mass x radius2

• Mass x torque

• Mass x diameter2

• Mass / diameter

Answer explanation

The moment of inertia, is the reluctance of an object to move through angular velocity. Moment of inertia is calculated with the equation Mass x radius² - how much mass and how for the end of the radius is from the axis of rotation. Thus, the correct answer to the question is 'Mass x radius²'. Other options mentioned are not formulas for calculating the moment of inertia.

Newton’s law of inertia states that

• every action has an equal and opposite reaction.

• an object will remain in constant motion or at rest unless acted upon by an external unbalanced force.

• force equals mass times acceleration.

• the angular momentum of a body remains constant unless acted upon by an external torque.

Answer explanation

Newton's law of inertia, also known as the First Law of Motion, states that an object will continue to stay at rest or move in a straight line at a constant speed, unless acted upon by an unbalanced external force. The correct answer reflects this law accurately.

Which one of the following best fits the classification of a gross motor skill?

• tying your shoelaces

• throwing a dart

• performing a long jump

• bouncing a tennis ball before serving

Answer explanation

Gross motor skills involve large muscle groups and include actions like running, jumping, and other whole-body movements. Among the options, 'performing a long jump' is a gross motor skill as it requires coordinated movement of large muscle groups, unlike tying shoelaces or throwing a dart which involve fine motor skills, or bouncing a tennis ball which involves a mix of both.

Random practice has slower rates of improvement during the training period, when at the cognitive and associative stages, yet is preferred by elite performers because it contributes to:

• Greater problem-solving ability specific to game situations

• Increased concentration

• More opportunities to receive augmented feedback

• Attention shifting from narrow internal to broad external

Answer explanation

The question asks why elite performers prefer random practice, despite slower improvement rates during training. The correct option is that it contributes to greater problem-solving ability specific to game situations. This is because random practice creates unpredictable scenarios, similar to real game situations, requiring players to apply problem-solving techniques, thereby enhancing their in-game decision-making abilities.

A volleyball player fully extending her elbow and wrist during a spike produces the longest anatomical lever possible at point of contact. This means that at point of contact the ball will be struck with:

• Sequential acceleration

• Maximal inertia

• Greatest velocity

• Most accuracy

Answer explanation

The longest anatomical lever produced by a volleyball player fully extending her elbow and wrist during a spike allows for maximum leverage. This translates into the greatest velocity at the point of contact with the ball, enabling the most powerful hitting action on the ball.

The graph below shows the VO2 levels measured during a sub-maximal test. Which of the labelled sections below indicate oxygen deficit and excess post-exercise oxygen consumption (EPOC)?

• Oxygen Deficit - A; EPOC - D

• Oxygen Deficit - B; EPOC - D

• Oxygen Deficit - A; EPOC - C

• Oxygen Deficit - D; EPOC - A

Answer explanation

The question asks about the sections indicating oxygen deficit and EPOC in a graph. The correct answer is 'Oxygen Deficit - A; EPOC - D'. This suggests that section A corresponds to the period of oxygen deficit, while section D represents the EPOC.

The resistance training program above is designed to improve which fitness component?

• muscular power

• muscular strength

• anaerobic capacity

• muscular endurance

Answer explanation

The question is asking about the fitness component that a resistance training program is designed to improve. Out of the given options, the correct answer is 'muscular power'. Power = Strength x Speed. The speed of the program is performed quickly. The load is lower than a strength program. The number of reps is 5-6 whereas endurance would be 15 reps.

A diver is performing a forward sault in a tuck position. Which one of the following statements is true?

• Once the diver pushes off the platform and is in the air, torque cannot be changed

• Angular momentum increases off the board and then decreases as he prepares to enter the water

• The moment of inertia is greatest when in a tuck position

• The distance and displacement are the same through the dive

Answer explanation

The correct answer is 'Once the diver pushes off the platform and is in the air, torque (spin) cannot be changed'. This is true because, in physics, once an object is in motion without external forces applied, its state of motion cannot change. Once the diver is in the air, there are no external torques acting on them, therefore, the torque cannot be altered.