Assertion: ball | /r/CapableOf | enter the roll phase
Facets:
value: before reaching the pins
type: TEMPORAL
value: down the lane
type: LOCATION
Source sentences:
text: Concurrently, lane friction continually decreases the angle of axis rotation until it exactly matches the direction of the ball's forward motion, and rev rate (rotational speed) increases until it exactly matches the ball's forward speed: full traction is achieved and the ball enters the roll phase in which forward speed continues to decrease.
text: The ball initially skids after first contact with the oily part of the lane, but enters a roll phase as full traction is eventually obtained in the dry portion of the lane.
text: A too-high release ratio (a speed-dominant release) causes the ball to reach the pins while still in the hook phase (resulting in a shallow angle of entry that permits ball deflection and resultant leaves of the 10-pin), and a too-low release ratio (a rev-dominant release) causes the ball to enter the roll phase before reaching the pins (sacrificing power to friction that would ideally be delivered to the pins to enhance pin scatter).
text: Ball speed and rev rate are said to be matched if the ball enters the roll phase immediately before impacting the pins, maximizing power imparted to the pins yet helping to provide an entry angle that minimizes ball deflection.
text: In practice, a higher RG indicates that a ball's mass is distributed more toward its cover—making it "cover heavy"—which tends to make the ball enter the roll phase later (further down the lane).