A man walks on a straight road from his home to market 2.5km

  • Thread starter reshmi
  • Start date
  • Tags
    Home
In summary, a man walks from his home to a market 2.5km away at a speed of 5km/h. After finding the market closed, he turns and walks back home at a speed of 7.5km/h. For the given time intervals of 0 to 30 minutes, 0 to 50 minutes, and 0 to 40 minutes, the man's total displacement over total time is calculated to be 2.5km, and his average speed is calculated to be 3km/h.
  • #1
reshmi
1
0

Homework Statement


A man walks on a straight road from his home to market 2.5km away with a speed of 5km/h. Finding the market closed, he instantly turns and walk back home with a speed of 7.5km/h.
For the given time intervals (i) 0 to 30minutes. (ii) 0 to 50minutes., (iii) 0 to40 min. What is the
a) magnitude of average velocity and
b) average speed of the man.


Homework Equations





The Attempt at a Solution


distance=displacement
d=s*t
2.5=5*x
x=5/2.5=2
 
Physics news on Phys.org
  • #2
welcome to pf!

hi reshmi! welcome to pf! :smile:

you're obviously not understanding the question, so let's rewrite it …

A man walks on a straight road from his home to market 2.5km away with a speed of 5km/h. So it takes him 30 minutes.

Finding the market closed, he instantly turns and walk back home with a speed of 7.5km/h. So that takes him 20 minutes, making a total of 50 minutes.

For the given time intervals (i) 0 to 30minutes. (ii) 0 to 50minutes., (iii) 0 to40 min. What is the
a) magnitude of total displacement over total time
b) average speed of the man.​

:wink:
 

1. How far is the market from the man's home?

The market is 2.5km away from the man's home.

2. How long does it take the man to walk to the market?

This depends on the man's walking speed, but assuming an average walking speed of 5km/hour, it would take the man approximately 30 minutes to walk to the market.

3. Is the man's path on the straight road the shortest distance to the market?

Yes, assuming the man is walking in a straight line from his home to the market, the straight road is the shortest distance.

4. What other factors may affect the man's walking time to the market?

Other factors that may affect the man's walking time include his physical fitness, the terrain of the road, and any obstacles or distractions along the way.

5. Can the man's walking speed change during his journey to the market?

Yes, the man's walking speed can change during his journey depending on external factors such as fatigue, weather conditions, and the weight of any items he is carrying.

Similar threads

  • Introductory Physics Homework Help
Replies
7
Views
1K
  • Introductory Physics Homework Help
Replies
12
Views
1K
  • Introductory Physics Homework Help
Replies
14
Views
1K
  • Introductory Physics Homework Help
Replies
1
Views
3K
  • Introductory Physics Homework Help
Replies
5
Views
11K
  • Introductory Physics Homework Help
Replies
20
Views
2K
  • Introductory Physics Homework Help
Replies
1
Views
5K
  • Introductory Physics Homework Help
Replies
2
Views
8K
  • Introductory Physics Homework Help
Replies
4
Views
4K
  • Introductory Physics Homework Help
Replies
2
Views
6K
Back
Top