Speedometer of a car measures

Does the speedometer of a car measure its average speed ?

What does the speedometer of a car measure average speed or instantaneous speed ?

Speedometer of a vehicle measures its ________ speed.

The speedometer of a car moving eastward reads 50 km //h . It passes another car which travels westward at 50 km//h . (i) Do both the cars have same dpeed ? (ii) Do they have the same velocity ? (ii) What is the relative velocity of car Aw.r.t. car B .

Mr. Verma drives his car at uniform speed from bottom of a mountain to the top in 30 minutes along a helical path as shown. At the beginning the speedometer of his car shows 6225 km , while on reaching the top it reads 6285 km . (Take upward as positive y-axis and positive x-axis towards right) The total distance covered is.