biomechanics

Question 1

newtons first law

Answer 1

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

Question 2

define inertia

Answer 2

the resistance of a body to change its state of motion whether at rest or while moving

Question 3

newtons second law

Answer 3

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

Question 4

newtons third law

Answer 4

law of motion
-for every action applied to a body there is an equal and opposite reaction force

Question 5

define velocity

Answer 5

the rate of change in displacement (the shortest straight-line route between start and finish points)

Question 6

formula to calculate velocity

Answer 6

velocity (m/s) = displacement/time taken

Question 7

define momentum

Answer 7

the quantity of motion possessed by a moving body

Question 8

formula to calculate momentum

Answer 8

momentum (kgm/s) = mass X velocity