1. Over which interval is the velocity greatest?

Question

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2. Over which interval(s) is the velocity zero?
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4. What is the average velocity in m/s from A to B?
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5. The velocity of an object goes from 4 m/s to 12 m/s in 4s. What is its acceleration?

Answer 1

without a diagram...
a. if you have a distance vs time graph, the greatest slope is highest velocity.
b. avg velocity= distance from A to B divided by time.

c. acceleration=changeinvelociy=8/4 m/s^2

Answer 2

Sorry about the lack of graph, I tried to put it here. but it wouldn't let me :(
For 1, on the graph, the highest point is c:d and it's just a starit line, does that mean the velocity is the greatest?
Please bear with me on this...

Answer 3

It depends on what is graphed.
Position vs time?
Velociy vs time?

If position vs time, then the slope of any line segment is =velocity.

If velocity vs time, then the highest point is highest velocity.

Answer 4

It's distance and time...