Adoor-door salesperson sells snow shovels and snow blowers, and can drive up to 9500km per week (tough because snowblowers can be shared among neighbors, the salesperson has to drive an average of 20km to sell a snowblower, but only 5km to sell a snow shovel. the salesperson can work up to 40 hours/week, and it takes an average of 0.05 hours to sell a snowblower (because they practically sell themselves), but 0.12 hours to sell a snow shovel (who wants to each snowblower weighs 25kg while each shovel weighs 2kg, and the salesperson can only carry 6500kg per week on the truck. when sold, a snowblower yields $45 in profit, while a snowshovel only yields $5 in profit.

answer:   you might love summer weather, but you don’t want it to feel like the sun is inside your car. but a hot car that just won’t seem to cool down might be a bigger of a problem than you think. your car relies on being at the right temperature.

explanation:

grav force prop 1/r squared 2r all squared is 4rsquared 1/4rsquared quartered

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.