Biomechanics: Momentum and Inertia

Question 1

Define momentum

Answer 1

• Momentum is the product of mass x velocity.
• P=MV

Question 2

Keyword to describe momentum??

Answer 2

• Momentum is constant.
• The momentum of an object will never change if it is left alone.

Question 3

How can we change momentum??

Answer 3

• Change in momentum will only happen as a result of the change in velocity.
• This will happen through the acceleration or deceleration caused by an external force.
• The greater the velocity the greater the momentum.

Question 4

Define Inertia

Answer 4

• Inertia is an objects resistance to change, its state of motion.

Question 5

What is ‘state of motion’?

Answer 5

• State of motion can either be stationary or moving.

Question 6

What causes inertia to increase?

Answer 6

• As mass increases so does inertia.
• The larger the mass of an object the harder it is to change it’s state of motion.

Question 7

How do we change an objects state?

Answer 7

• In order to change an objects state of motion an external force is needed.
• The greater the mass, the greater the force is needed.