Is Calculating Average Speed for a Round Trip Journey Challenging?

  • Thread starter Thread starter ella_101
  • Start date Start date
AI Thread Summary
Calculating the average speed for a round trip journey can be challenging, especially when different speeds are involved. In this case, a cyclist travels out at 3 m/s and returns at 9 m/s. To find the average speed for the entire journey, the formula for average speed, which is total distance divided by total time, must be applied. Using the equations provided, one can determine the time taken for each leg of the journey and then calculate the overall average speed. Understanding these calculations is essential for accurately determining average speed in varying conditions.
ella_101
Messages
8
Reaction score
0
“if a cyclist travels at an average speed of 3m/s-1 and turns home at an average speed of 9m/s than what is the average speed of the whole journey?”


do I need an equation to work this out?

And please show how you got your answer.


Thanks
 
Physics news on Phys.org
Try using the equations:

\bar{speed} = \frac{\Delta X}{\Delta t}
X = V_0{}t + at

Also, try using different values for X.
 

Thread 'Errors and significant figures'

I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
View full post »
Thread 'Calculation of Tensile Forces in Piston-Type Water-Lifting Devices at Elevated Locations'

Thread 'Calculation of Tensile Forces in Piston-Type Water-Lifting Devices at Elevated Locations'

Figure 1 Overall Structure Diagram Figure 2: Top view of the piston when it is cylindrical A circular opening is created at a height of 5 meters above the water surface. Inside this opening is a sleeve-type piston with a cross-sectional area of 1 square meter. The piston is pulled to the right at a constant speed. The pulling force is（Figure 2）： F = ρshg = 1000 × 1 × 5 × 10 = 50,000 N. Figure 3: Modifying the structure to incorporate a fixed internal piston When I modify the piston...
View full post »
Thread 'A cylinder connected to a hanging mass'

Thread 'A cylinder connected to a hanging mass'

Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
View full post »

Similar threads

Calculate Distance Traveled: Instantaneous vs. Average Velocity
Replies
5
Views
2K
What is the Average Speed of a Cyclist on a Multi-Stage Journey?
Replies
10
Views
2K
Calculating Average Speed for a Particle Traveling at Two Different Velocities
Replies
6
Views
1K
Trying to get an average speed of 60 MPH
Replies
8
Views
3K
Average velocity? Average speed?
Replies
9
Views
3K
Avg Power in a Rotational Energy/Work Problem
Replies
6
Views
1K
Calculating Average Speed on a Road Trip | Physics Help for Beginners
Replies
40
Views
7K
Vectors, how to find average acceleration
Replies
13
Views
7K
What Is the Average Speed of Tyler's Journey?
Replies
5
Views
2K
Calculating Average Speed: Physics Homework Problem
Replies
13
Views
2K

Hot Threads

Recent Insights

Back
Top