What is instantaneous acceleration?
a. how fast a speed is changing at a specific instant
b. how fast a velocity is changing at a specific instant
c. how fast a direction is changing at a specific instant
d. all of the above

Which of these is an example of pseudoscience? a) predicting the time of sunrise based on data on position of earth b) predicting the date of the moon phases based on data on position of earth c) predicting eclipses based on the position of the sun and the moon d) predicting future events in a person's life based on the position of the moon