You nose out a runner to win the 100 meter dash. If your total time

  • Thread starter Thread starter Goopy17
  • Start date Start date
  • Tags Tags
    Meter Time
AI Thread Summary
To determine the distance won in a 100 meter dash where the victory margin is 0.001 seconds, one approach is to calculate average speed, using the total time of 11.8 seconds. Another method involves assuming constant acceleration and using final velocity to estimate the distance. A hypothetical final velocity of 10.7 m/s can also be used for calculations, although this value is arbitrary. Additionally, considering the length of a nose, approximately 2.7 cm, can help relate speed to the time difference. Ultimately, the question lacks sufficient definition for a precise answer.
Goopy17
Messages
39
Reaction score
0
You nose out a runner to win the 100 meter dash. If your total time was 11.8 seconds and you won by .001 seconds, by how many meters did you win?
Help! Thanks!
 
Physics news on Phys.org


Goopy17 said:
You nose out a runner to win the 100 meter dash. If your total time was 11.8 seconds and you won by .001 seconds, by how many meters did you win?
Help! Thanks!

You could work out an average speed - 100m in 11.8 seconds - to get an answer.
Or
You could assume constant acceleration for the duration of the race and use the final velocity to get an answer,
Or
You could take a guess that the runner achieves a final velocity of 10.7 m/s, and accelerated up to that speed, then continued at constant speed.

btw: I just invented the value 10.7 m/s; though the last possibility probably best models a real runner.

You could always assume a nose is 2.7 cm long and calculate what speed would mean a 2.7cm win = 0.001 seconds.

None of the above really answers this question, but then the question is insufficently defined to have a specific answer.
 

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 '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

How Many Meters Did You Win the Race By?
Replies
1
Views
4K
Finding distance in a race based on speed
Replies
2
Views
3K
Which runner has a larger maximum speed?
Replies
2
Views
5K
What is the Work Done During a 100m Sprint?
Replies
16
Views
2K
Can a Tiger Outrun a Lion in a 100 Meter Dash?
Replies
1
Views
2K
How Does Acceleration Impact a Sprinter's 100 Meter Dash Performance?
Replies
6
Views
6K
Acceleration of a runner to finish in his desired time
Replies
2
Views
3K
Can a Runner Accelerate to Finish a 10,000 Meter Race in Time?
Replies
3
Views
2K
Velocity vs time graph of runner
Replies
6
Views
10K
Find Projectile Flight Time Given Only Maximum Height
Replies
4
Views
2K

Hot Threads

Recent Insights

Back
Top