# Homework Help: Change in Velocity

1. Sep 14, 2011

### BuhRock

1. If the velocity at the beginning of an interval is 4 m/s and at the end of the interval it is 10 m/s, then what is the average of these velocities, and what is the change in velocity?

Give an example of positive initial and final velocities for which the order of the four quantities would be different.

For positive initial and final velocities, is it possible for the change in velocity to exceed the other three quanities?

2. avg velocity = displacement/time

3. It asks for the average of these velocities. So I can take 10m/s + 4m/s and divide by 2 which equals 7m/s to get the average of those two. The initial is is 4m/s and the final is 10m/s.

I'm not sure how to get the change in velocity with these.

2. Sep 14, 2011

### cepheid

Staff Emeritus
The change in velocity is just...how much it changed. In other words, what was the difference between the final value and the initial value?

3. Sep 14, 2011

### BuhRock

So 6 m/s. Is that all? I was over thinking it.

4. Sep 14, 2011

### cepheid

Staff Emeritus
Yeah: how much did the velocity change by? 6 m/s.