chapter 8 100m dash

Question 1

what is the acceleration phase

• acceleration?
• begin and end?

Answer 1

• begin of dash
• accel will be large
• will end as runner approaches max speed

Question 2

what is plateau phase
acceleration?
begin and end?

Answer 2

• average accel = 0
• begins at near max
• ends at near max

Question 3

what is the kick phase
acceleration?
begin and end?

Answer 3

• average accel: not good indication b/c velocity not changing at constant rate
• begins: runner quickly attains max speed
• ends: as accel reaches zero

Question 4

what are energy stores if runner

• pos accel at finish
• neg accel at finish

Answer 4

pos: still has energy stored
neg: stores exhausted too early