An empty 1160 kg car has its cm 2.40 m behind the front of the car. how far from the front of the car will the cm be when two people sit in the front seat 2.80 m from the front of the car, and three people sit in the back seat 3.90 m from the front? assume that each person has a mass of 70.0 kg.

cm = 2.65m

Explanation:

The center of mass is given by: cm = sum of momenta / total mass

cm = 1160kg * 2.4m + 2 * 70kg * 2.8m + 3 * 70kg * 3.9m / (1160kg + 5 * 70kg)

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