Calculate the sprinters average acceleration

In summary, a sprinter with a velocity of 6.0m/s [s] at t=3.0s has a velocity of 4.0m/s [n] at t=8.0s, resulting in an average acceleration of -0.4m/s^2. No conversion to different units is necessary for this problem.
  • #1
jeahomgrajan
49
0

Homework Statement


A sprinter has a velocity of 6.0m/s at t=3.0s.
Five seconds later he is moving north with a speed of 4.0m/s. calculate the sprinters average acceleration


Homework Equations



average acceleration=change in velocity/elapsed time

The Attempt at a Solution



t1=3.0s, v1=6.0m/s, t2=8.0s, v2=-4.0m/s
 
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  • #2
Your velocities (and acceleration) are vectors. They have a direction. What's vf-vi if vf=4m/s [n] and vi=6m/s ?
 
  • #3
yeah i can jjust solve it, suppose i needed to change km/h/s to m/s^2
 
  • #4
jeahomgrajan said:
yeah i can jjust solve it, suppose i needed to change km/h/s to m/s^2

I think you are thinking of a different problem. There's no km/hr in this one.
 
  • #5
jeahomgrajan said:
yeah i can jjust solve it, suppose i needed to change km/h/s to m/s^2

Not sure how that relates to the question. They're already in standard units.
 
  • #6
yeah i know I am just asking generally
 

1. What is the formula for calculating a sprinter's average acceleration?

The formula for average acceleration is: a = (vf - vi) / t, where a is acceleration, vf is final velocity, vi is initial velocity, and t is time.

2. How do you measure a sprinter's acceleration?

To measure a sprinter's acceleration, you need to record the time it takes for them to go from a stationary position to their maximum running speed. This can be done using a stopwatch or timing equipment.

3. What is considered a good average acceleration for a sprinter?

The average acceleration for a sprinter can vary depending on their level of training and physical abilities. However, a good average acceleration for a sprinter is typically around 3-4 meters per second squared.

4. What factors can affect a sprinter's average acceleration?

There are several factors that can affect a sprinter's average acceleration, including their technique, strength, power, and reaction time. Other external factors such as wind resistance and track surface can also play a role.

5. How can calculating a sprinter's average acceleration be useful?

Calculating a sprinter's average acceleration can be useful in evaluating their performance and progress over time. It can also help coaches and trainers identify areas for improvement and develop training programs tailored to the individual's needs.

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