The graph below shows how the speed of a bus changes during part of a journey.
16. In segment 0-A, the bus is ___________ . Its speed changes from 0 to 10 m/s in 5 seconds.
accelerating********
accelerating negatively
at a constant speed
at rest
17. In segment A-B, the bus is moving __________ of 10 m/s for 5 seconds.
accelerating
accelerating negatively
at a constant speed*******
at rest
18. In segment B-C, the bus is ____________. It is slowing down from 10 m/s to rest in 3 seconds.
accelerating
accelerating negatively****
at a constant speed
at rest
19. In segment C-D, the bus is __________. It has stopped.
accelerating
accelerating negatively
at a constant speed
at rest***
20. In segment D-E, the bus is _________. It is gradually increasing in speed.
accelerating****
accelerating negatively
at a constant speed
at rest
21. Calculate the acceleration of the bus from point D to E. Show your work.
21. What is the acceleration of the bus from point D to E in meters per second per second
Can anyone help me with the last two? Also check if im right for the others please :)
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Here is the graph. add these numbers to the end 14610344
acceleration is change in velocity divided by time interval.
So, look at the graph and divide the speed change by the time to took.
The acceleration is just the slope of the velocity line.
Hint: consider the units. Acceleration is in m/s^2
So, divide change in velocity (m/s) by change in time (s)
16. In segment 0-A, the bus is accelerating. Its speed changes from 0 to 10 m/s in 5 seconds.
17. In segment A-B, the bus is moving at a constant speed of 10 m/s for 5 seconds.
18. In segment B-C, the bus is accelerating negatively. It is slowing down from 10 m/s to rest in 3 seconds.
19. In segment C-D, the bus is at rest. It has stopped.
20. In segment D-E, the bus is accelerating. It is gradually increasing in speed.
To calculate the acceleration of the bus from point D to E, you need to know the change in velocity and the time interval.
Let's assume the initial velocity at point D is Vd and the final velocity at point E is Ve. The time interval is denoted as Δt.
Acceleration (a) is given by the formula:
a = (Ve - Vd) / Δt
To calculate the acceleration, you need to know the values of Ve, Vd, and Δt.
Sure, I can help you with the last two questions.
For question 21, to calculate the acceleration of the bus from point D to E, we need to use the formula:
acceleration = (final velocity - initial velocity) / time
From the graph, we can see that the bus is accelerating from rest (0 m/s) to a final velocity of 20 m/s in 10 seconds (from point D to point E). Therefore, the initial velocity is 0 m/s, and the final velocity is 20 m/s, and the time is 10 seconds.
Using the formula, we can calculate the acceleration:
acceleration = (20 m/s - 0 m/s) / 10 s = 2 m/s^2
So, the acceleration of the bus from point D to E is 2 m/s^2.
Now, for question 22, it appears to be a repetition of question 21. The previous question already asked for the acceleration from point D to E and we calculated it to be 2 m/s^2. Therefore, the answer to question 22 is the same as the answer to question 21, which is 2 m/s^2.
Regarding the answers to the previous questions, your responses are generally correct:
16. In segment 0-A, the bus is accelerating.
17. In segment A-B, the bus is moving at a constant speed.
18. In segment B-C, the bus is accelerating negatively (slowing down).
19. In segment C-D, the bus is at rest.
20. In segment D-E, the bus is accelerating.