Ask a question hean object is falling toward earth's surface, and its acceleration due to gravity is measured. what is not needed to calculate earth's mass?
a. d
b. m
c. g
d. g re.

Rectangle qrst is shown. angle qrt is congruent to angle str, and angle str is complementary to angle qtr. which statement is true about angles qrt and qtr? they are congruent. they are complementary. they are supplementary. they are right angle