Momentum - Part II

Question 1

What does the Conservation of Linear Momentum state?

Answer 1

The total momentum possessed by objects before and after collision will remain the same.

Question 2

Using bowling as an example, describe how the Conservation of Linear Momentum takes place.

Answer 2

• Bowling ball will travel with significant momentum.
• Pins will have no momentum before collision.
• At collision bowling ball’s momentum will decrease as it is passed onto the pins.
• At collision, pins will gain momentum and be knocked over.
• Total momentum possesed by ball and pins after collision is equal to momentum possesed by both before collision.

Question 3

What are the key points to include when ansering a Conservation of Linear Momentum question?

6 points.

Answer 3

• Definition for Conservation of Linear Momentum
• Formula for momentum.
• Momentum possesed by objects before collison.
• Momentum possesed by objects after collision and the change.
• Total momentum between objects staying the same before and after collision.
• Links to question.

Question 5

What is summation of momentum?

Answer 5

The summed up force produced by body parts working together to allow an object to possess a high momentum.

Not official definition.

Question 6

What are the two types of summation of momentum scenarios - briefly explain each.

Answer 6

• Sequential force summation - Body parts move in sequence to produce desired amount of force.
• Simultaneous force summation - Body parts are moved at same time to perform an action.

Question 7

How is the number of body parts linked to Summation of Momentum?

Answer 7

It is important to use as many body parts as possible to maximise momentum.

Question 8

Describe the order of muscles that produce force in a sequential summation of momentum

Answer 8

Movement is initiated by bigger, stronger muscles that are closest to centre of gravity first and squentially transfered to smaller muscles.

Question 9

Explain how a follow through aids in the Summation of Momentum

Answer 9

Follow through is vital to ensure maximum velocity is achieved at point of release

Question 10

Describe the relationship between stability and summation of momentum

Answer 10

A stable position allows for the process to be more effective.

Question 11

Highlight the importance of timing in summation of momentum

Answer 11

Correct timing and sequencing of body parts and muscles through a range of motion is vital for effective sporting performance.

Question 12

State the important points to include in a Summation of Momentum question.

4/6 at least.

Answer 12

• Use of a stable position
• Using as many body parts as possible
• Bigger and stronger muscle groups near core first
• Need for a follow through
• Precise timing and sequencing of body parts
• Link to question