chapter 3 . biomechanics

Question 1

newtons first law (inertia )

Answer 1

an object will remain at rest or in constant velocity unless acted upon by an external force

Question 2

newtons second law ( acceleration )

Answer 2

a force applied to an object will produce a change in motion in the direction of the applied force that is directly proportional to the size of the force.

Question 3

newtons third law

Answer 3

for every action there is an equal and opposite reaction.

Question 4

inertia

Answer 4

tendency for a body to resist its state of motion, whether the state is at rest or moving. the greater the mass of an object the greater its inertia is.

Question 5

impulse

Answer 5

equal to the change in momentum of an object. manipulating impulse improves performance or prevents injury.

Question 6

momentum

Answer 6

if an object is moving it has momentum

Question 7

linear distance

Answer 7

the actual course an object travels

Question 8

linear displacement

Answer 8

equals the difference between the starting and stopping position.

Question 9

linear speed

Answer 9

the ratio of the distance converted to the time taken

Question 10

linear velocity

Answer 10

the ratio of the displacement to the time taken

Question 11

linear acceleration

Answer 11

when an unbalanced force acts on a mass and its state of motion chnages . m/s