Question

Pls help I don’t understand any of it, I just need 7b, c, and d. Thank you!!!

Answer 1

a. Check image below.

b. Check image below.

c. 4m/s.

d. 3m/s.

Step-by-step explanation:

Part a.

Check attached image 1 below.

Part b.

Let's first find the average velocity.

Average velocity's formula:
`A_v=(Td)/(Tt)`; where Td is the total distance covered by the robot and Tt is the total time used to cover that distance. Substitute the values in the formula and calculate:

`A_v=(30m)/(10s)=3m/s`

Hence, the average velocity on the graph will consist on a line whose slope is 3. Another easier method to mark the average velocity of the robot is to just make a line that starts on the first point of the graph and finishes on the last point. Check attached image 2 to see the result.

Part c.

To calculate the answer for this question, use the same formula presented on "Part b" and substitute by the correct values.

`A_v=(25m-17m)/(8s-6s)=4m/s`.

Part d.

We already solved this in "Part b". Write it again with more detail for this part.

`A_v=(P_2-P_1)/(t_2-t_1)`; where
`P_2` and
`P_1` are the final position, and initial position, respectively. Also,
`t_2` and
`t_1` are the final time, and initial time, respectively.

`A_v=(P_2-P_1)/(t_2-t_1)=(30m-0m)/(10s-0s)=3m/s`