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प्रश्न
Study the graph given below of a person who started from his home and returned at the end of the day. Answer the questions that follow.
- At what time did the person start from his home?
- How much distance did he travel in the first four hours of his journey?
- What was he doing from 3 pm to 5 pm?
- What was the total distance travelled by him throughout the day?
- Calculate the distance covered by him in the first 8 hours of his journey.
- At what time did he cover 16 km of his journey?
- Calculate the average speed of the man from (a) A to B (b) B to C.
- At what time did he return home?
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उत्तर
Observing the graph carefully, we conclude that
- At 10 AM, the person start from his home.
- In first 4 h (i.e. till 2 PM), he travelled 16 km.
- He was taking rest from 3 PM to 5 PM.
- The total distance covered by the person throughout the day was 40 km, i.e. 20 km from A to S and then 20 km from C to D.
- The distance covered by him in the first 8 h i.e. from 10 AM to 6 PM was 24 km.
- He covered 16 km of his journey at 2 PM.
- The total distance covered from A to S = 20 km and the time taken to travel from A to B = 5 h
∴ Average speed of the man from A to B = `20/5` = 4 km/h and average speed from S to C = `0/2` = 0 km/h - He returned home at 10 PM.
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संबंधित प्रश्न
The coordinates of a point at a distance of 3 units from the x axis and 6 units from the y axis is ______.
The process of fixing a point with the help of the coordinates is known as ______ of the point.
For the point (5, 2), the distance from the x-axis is ______ units.
The x-coordinate of any point lying on the y-axis will be ______.
In the point (4, 7), 4 denotes the ______.
The ordinate of a point is its distance from the y-axis.
Write the x-coordinate (abscissa) of the given point.
(0, 5)
Plot the given points on a graph sheet and check if the points lie on a straight line. If not, name the shape they form when joined in the given order.
(1, 2), (2, 4), (3, 6), (4, 8)
This graph shows the per cent of students who dropped out of school after completing High School. The point labelled A shows that, in 1996, about 4.7% of students dropped out.
- In which year was the dropout the rate highest? In which year was it the lowest?
- When did the per cent of students who dropped out of high school first fall below 5%?
- About what per cent of students dropped out of high school in 2007? About what per cent of students stayed in high school in 2008?
Consider this input/output table.
| Input | 1 | 2 | 4 | 5 | 7 |
| Output | 2 | 5 | 11 | 14 | 20 |
- Graph the values from the table by taking Input along horizontal axis from 0 to 8 and Output along vertical axis from 0 to 24.
- Use your graph to predict the outputs for inputs of 3 and 8.
