ALWAYS use significant figure rules. Remember that these rules apply to all numbers that are measurements5 tatet
fyou travel 40 miles east and then turn around and drive 12 miles west, the displacement is?
28 miles E
52 miles W
52 miles E
none of the above
Please help I need urgent I would be very grateful for it and give you brainleast

28 miles E

Explanation:

Given parameters:

Distance due east  = 40miles

Distance due west  = 12miles

Unknown:

Displacement = ?

Solution:

Displacement is the distance with a specified direction. It only considers the initial and final points.

   Displacement = Final distance  - Initial distance

   Displacement  = 12miles  - 40miles

   Displacement  = - 28miles

The negative 28miles shows that the car is moving east ward.

russian is not my first language, so i'm afraid i can't write out an answer in russian, but hopefully you can find a way to do so. here's my best translation of the problem: you're given a plot of a particle's position in one-dimensional space over time, and you're asked to find either the total distance traveled by the particle after 6 seconds had elapsed, or the total displacement of the particle after 6 seconds.

if you want the total distance traveled, you would first need to determine the particle's velocity as a function of time, then integrate that over the 6-second interval. we know the position function is quadratic with roots at 0 and 6, so we have

where is unknown. because the position is parabolic, there is symmetry about the midpoint at , and we know that

so that the position function is

which means the velocity is

then the total distance traveled is

so the total distance traveled is 20 m.

on the other hand, if you want to find displacement: the particle starts at and ends at , so its displacement is 0.