Emily. The moon, Mrs. B., appears to move in a different direction, and in a different manner from the stars?
Mrs. B. I shall defer the explanation of the motion of the moon till our next interview, as it would prolong our present lesson too much.
Questions
1.(Pg. [71]) What revolution does the earth perform in a year?
2.(Pg. [71]) Had the earth received a projectile force only, at the time of its creation, how would it have moved?
3.(Pg. [72]) What do the lines A B, and A C, represent in [fig. 1. plate 6]?
4.(Pg. [72]) What have you been taught respecting a body acted upon by two forces at right angles with each other?
5.(Pg. [72]) How does the force of gravity change the diagonal into a curved line?
6.(Pg. [72]) Describe the operation of the forces of projection and of gravity as illustrated by the parallelograms in the figure?