Acar traveled at a constant velocity of 70 mph from noon to 2: 00 pm. at 3: 00 pm the velocity of the car was 80 mph; and finally at 4: 30 pm the velocity of the car was 40 mph.

which statement accurately describes the acceleration of the car?

a) the car had a positive acceleration the entire time.
b) the car had a negative acceleration from noon to 2: 00 pm.
c) the acceleration of the car from 3: 00 pm to 4: 30 pm was zero
d) the car had a positive acceleration between 2: 00 pm and 3: 00 pm.

The correct option is D.

Explanation: Acceleration is defined as the ratio of velocity over time.

Positive acceleration is defined as the increase in the velocity over a time period.

Negative acceleration is defined as the decrease in the velocity over a time period.

In the given question,

Hence, the correct option is D.

explanation:

two years ago, when picking flowers in the mountains back of yosemite valley, i found a book. it was blotted and storm-beaten; all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however; many of the inner pages were well preserved. and although all were more or less stained and torn, whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today; its granite pages have been torn and blurred by the same storms that wasted the castaway book.

two years ago, when picking flowers in the mountains back of yosemite valley; i found a book. it was blotted and storm-beaten, all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however, many of the inner pages were well preserved. and although all were more or less stained and torn; whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today, its granite pages have been torn and blurred by the same storms that wasted the castaway book.