The decimal place accuracy of a number is the number of digits to the right of the decimal point. ... If there is no decimal point, it is understood to be after the last digit on the right and there is no place (zero place) accuracy. The significant digits of a number are those digits that are most accurate.
The angular velocity, ω= 2π/t; t = 24 hrs = 24 x 3600 seconds = 86400 s ω = 7.27 x 10⁻⁵ v = ωr = 7.27 x 10⁻⁵ x 3242.8 x 1.6 x 1000 (converting miles to meters) = 377.2 m/s
The answer is C) rate of change of momentum. The answer is not initial or final momentum as the start and end points are not changing. On the other hand, the time it takes for the ball to change velocity is. This change relates to the change of momentum. Hope this helped :))