Arunner increases his velocity from 0 m/s to 20 m/s in 2.0s. what was his average acceleration?

Runner's average acceleration was 10 m / s²

The average acceleration refers to how fast the runner is going in relation to time.

It is calculated by the formula:

= Change in speed / Time

Change in distance here is:

= 20 m/s - 0 m/s

= 20 m/s

The acceleration is therefore:

= 20 / 2

= 10 m/s²

In conclusion, the runner was accelerating at a rate of 10 m/s².

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change in velocity = 20 - 0 = 20

change in time = 2 seconds

Divide the change in velocity over the change in time: 20/2 = 10

The average acceleration is 10 m/s^2

I.e, each second, the speed increases by 10 m/s

cone

Step-by-step explanation:

If in the image you can see that the vertex with the angle of 90° is in the (0,0), then, looking at only the changes in the other vertex, we have.

Before the rotation, we have one vertex in the x = 0 line, and other vertex in the y = 0 line.

After the rotation, the vertex in the y = 0 line will draw a circle, while the point in x= 0 will not do anything (because the point is colinear to the axis of rotation).

Then our figure has a circular base and ends on a point, connecting those figures we can se that the figure is a cone.