Cars a, b, c, d, and e are moving on tracks from left to right. the lengths of the tracks are the same. assuming each car started at the beginning of its track, which cars are moving at a constant velocity? a) a and c b) b and d c) c and e d) d and a

The cars A and C are moving with a constant velocity. The correct option is A.

The diagram attached, is a motion diagram, which marks the positions of an object measured at equal time intervals by means of dots.

If the dots are evenly spaced, it shows that the object is making equal displacements in equal intervals of time, which means that the object has a constant velocity.

In the attached diagram, it can be seen that the dots for the cars A and C are equally spaced, showing that these cars are moving with a constant velocity.

The cars B and D are accelerating, since the space between the dots appears to increase.

The car E is decelerating, as the distance between the dots progressively decreases.

Hence only the cars A and C are moving with constant velocities, with A having a greater velocity than C.

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west

answer; how far out of place which the object finished relative to the starting location;