Avelocity vs. time graph for an object is shown. which best describes the acceleration of the object? constant and positive constant and negative changing and positive changing and negative

The correct answer is constant and positive

The velocity is changing with respect to time at constant rate and we know that the change in velocity is known as acceleration so a constant change in velocity with respect to time will give us a constant acceleration. Similarly the velocity is gradually increasing that is why we will take the acceleration as positive .

constant and positive

Explanation:

Acceleration is the rate of change of velocity. It can be measured in meter per second square.

It can be measured from the slope of velocity - time graph.

In the given velocity vs. time graph, the slope is a straight line in the first quadrant. This means the acceleration is uniform (constant) and positive.

Acceleration from the given graph is:

a = change in velocity /time interval = (5-0)m/s/(5-0)s = 1 m/s².

vapour or gas assuming atmospheriv pressure

false.

explanation:

this statement is false. after falling for 5 seconds, its speed will not be 100 m/s.