A trolley with a 5.0 cm long card passed through a single light gate. The time recorded by a digital
timer was 0.40 s. What was the average speed of
the trolley in ms-1?

0.125m/s

Explanation:

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