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### Course: Mechanics (Essentials) - Class 11th>Unit 4

Lesson 2: Turning a race into a snapshot

# Position-time graphs

Using position-time graphs and number lines to find displacement and distance traveled.

## Want to join the conversation?

• Anyone here pursuing majors in physics and chemistry?

I wanted to ask is it really hard to pursue?
(Currently, I am in high school)

Well, I get very intrigued by
high advanced level physics and chemistry.
• Going for it too in the future, heard it's really hard but someone's gotta give it a shot
(1 vote)
• Can a displacement-time graph tell you what direction something is going? I was doing this question from school and it said something about the graph telling us that an object did not move north or south because there was a horizontal line on the graph. Help? (sorry if it doesn't make sense)
• yes it does. the positive side of y axis tells you that the body is moving forward or upward and the negeative side of the y axis tells you that the body is moving backwards or downwards
• i dont understand what is the answer for displacement and the distance traveled?

sorry if this is a dumb question
• Lets take an object like a ball
Now we place the ball on the floor at point A, then we push the ball with some spin so that it curves to the right and reaches point B

The distance traveled by the ball is the measure of the curve which the ball traveled in .

Displacement is the shortest distance from point A to point B (i.e a straight line from point A to point B )
https://commons.wikimedia.org/wiki/File:Distancedisplacement.png - a figure of the above said

• mentioned the word 'Mississippi ' is it a unit or what does that mean?
• In the animation, he was just counting the number of seconds so he could make it accurate. To count seconds, some people say one Mississippi, two Mississippi, etc.
• At he says, "at 2 seconds we're at negative one." At, he says the unit is meters. How can it be negative meters? Didn't he say that distance can't be negative in a previous video?
• if you see the table properly it is position time table not a distance time table. if we take 0 as our house and we denote left as negative and right as positive then we are 1 metres left which mean after 2 seconds we are negative one metre from house
• seems like somebody is jumping from one position to another, like gymnast on a cable for example !
• at there is pirate skull mouse clicker thingy. just letting ya'll know the end is near