Two ice skaters are at rest and facing each other. In order to move, they push off each other. What is known about their final total momentum? A. Nothing is known about the final total momentum.
B. One skater must remain at rest.
C. The final total momentum must equal zero.
D. Since they are on ice, this will not work. Neither can move.

resonant frequency

i had this question and the answer was 3.15 miles.

martina travels from school to her mom's office. from there, she walks to school. after school, she walks to the library and then to a friends house before finally ending back at home. find martina's total distance traveled.

a) 0 miles  

b) 0.4 miles  

c) 1 mile  

d) 3.15 miles