A rapezoid was broken into two congruent triangles and rectangles

the total distance traveled by the car is

30km + 49km = 79 km .

force required to detach it is given by

charges are taken to be fundamental charge

now we have

so above is the minimum distance at which it will detach

answer a fan shaped mass of sediment deposited at the base of a mountain front do to an abrupt change in stream gradient;