Near the end of a marathon race, the first two runners are separated by a distance of 45.0 m. the front runner has a velocity of 3.50 m/s, and the second a velocity of 4.20 m/s. what is the velocity of the second runner relative to the first?

0.7 m/s

Explanation:

velocity of first runner = 3.5 m/s

velocity of second runner = 4.20 m/s

Both the runner are running in the same direction

velocity of second runner with respect to first runner = velocity of second runner - velocity of first runner

velocity of second runner with respect to first runner = 4.20 - 3.5 = 0.7 m/s

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