Biomechanics

Question 1

Newtons law of inertia

Answer 1

A body continues in a state of rest or uniform velocity unless acted upon by an external or unbalanced force

Question 2

Newtons law of acceleration

Answer 2

A body’s rate of change of momentum is proportional to the size of the force applied and acts in the same direction as the force applied

Question 3

Newtons law of reaction

Answer 3

For every action there is an equal and opposite reaction

Question 4

Velocity (m/s)

Answer 4

Rate of change if displacement(shortest straight line route between start and finish point
Velocity = displacement/time taken

Question 5

Momentum (kg m/s)

Answer 5

Quantity of motion possessed by a moving body

Momentum = mass x velocity

Question 6

Acceleration (m/s/s)

Answer 6

Rate of change of velocity

Acceleration = (final - initial velocity)/time taken

Question 7

Force (N)

Answer 7

A push or a pull that alters the state if motion of a body

Force = mass x acceleration

Question 8

Net force

Answer 8

If the net force is 0, no change in motion, forces are balanced if a net force is present, there is a change in motion as forces are unbalanced`

Question 9

External forces

Answer 9

Split into vertical forces and horizontal forces