Question

A 72-kg sprinter accelerates from 2.2 m/s to 7.95 m/s over a distance of 25 m. Calculate the average force, in newtons, that the sprinter exerts backward on the track, if he encounters a headwind that exerts an average force of 32 N against him.

Name: a 72 kg sprinter accelerates from 22 ms to 795 ms over a distance of 25 m calculate the average force in newtons that the sprinter exerts backward on the track if he encounters a headwind that exerts
Uploaded: 2025-01-14T17:36:49-08:00
Duration: 2 min 48 s
Channel: Jenny Wu
Description: a 72 kg sprinter accelerates from 22 ms to 795 ms over a distance of 25 m calculate the average force in newtons that the sprinter exerts backward on the track if he encounters a headwind that exerts

          A 72-kg sprinter accelerates from 2.2 m/s to 7.95 m/s over a distance of 25 m.  Calculate the average force, in newtons, that the sprinter exerts backward on the track, if he encounters a headwind that exerts an average force of 32 N against him.

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Solved by Expert Jenny Wu

01/14/2025

Step 1

- Mass of the sprinter, \( m = 72 \, \text{kg} \) - Initial velocity, \( v_i = 2.2 \, \text{m/s} \) - Final velocity, \( v_f = 7.95 \, \text{m/s} \) - Distance, \( d = 25 \, \text{m} \) - Headwind force, \( F_{\text{wind}} = 32 \, \text{N} \) Show more…

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A 72-kg sprinter accelerates from 2.2 m/s to 7.95 m/s over a distance of 25 m. Calculate the average force, in newtons, that the sprinter exerts backward on the track, if he encounters a headwind that exerts an average force of 32 N against him.