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Average Velocity Formula - Class 9 PDF Download
What is the formula of average velocity?
Ref: https://edurev.in/question/512427/What-is-the-formula-of-average-velocity-
Average Velocity Formula (displacement over time)
The velocity of an object is the rate at which it moves from one position to another. The average velocity is the difference between the starting and ending positions, divided by the difference between the starting and ending times. Velocity has a magnitude (a value) and a direction. The unit for velocity is meters per second (m/s).
vavg = average velocity (m/s)
x1 = the start position of an object (m)
x2 = the end position of an object (m)
t1 = the start time of the motion (s)
t2 = the end time of the motion(s)
FAQs on Average Velocity Formula - Class 9
| 1. What is the formula for average velocity? |  |
Ans. The formula for average velocity is given by dividing the change in displacement by the change in time. It can be represented as:
Average Velocity = (Displacement / Time)
| 2. How is average velocity different from instantaneous velocity? | |
Ans. Average velocity is the measure of the total displacement over a given time interval, whereas instantaneous velocity is the velocity at a specific moment in time. Average velocity considers the overall motion, while instantaneous velocity focuses on the motion at a specific point.
| 3. Can average velocity be negative? | |
Ans. Yes, average velocity can be negative. It depends on the direction of the displacement. If an object moves in the opposite direction of the reference point, the average velocity will be negative. Positive average velocity indicates motion in the same direction as the reference point.
| 4. How can average velocity be calculated from a distance-time graph? | |
Ans. The average velocity can be calculated from a distance-time graph by finding the slope of the line connecting two points on the graph. The slope represents the change in distance divided by the change in time, which gives the average velocity.
| 5. Is average velocity the same as average speed? | |
Ans. No, average velocity and average speed are different. Average velocity considers both the magnitude and direction of the displacement, whereas average speed only considers the magnitude of the total distance traveled. Average velocity is a vector quantity, while average speed is a scalar quantity.
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