If a car travels 400m in 20 seconds how fast is it going? 20 m/s

20m/s

Explanation:

Speed = distance / time

Speed = 400/20

Speed = 20

prolly a beacuse the momentuem the car has increases while going down hill

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