A runner of mass 57.5 kg starts from rest and accelerates with a constant acceleration of $1.25 \mathrm{~m} / \mathrm{s}^{2}$ until she reaches a velocity of $6.3 \mathrm{~m} / \mathrm{s}$. She then continues running with this constant velocity. a) How far has she run after 59.7 s? b) What is the velocity of the runner at this point?

          A runner of mass 57.5 kg starts from rest and accelerates with a constant acceleration of $1.25 \mathrm{~m} / \mathrm{s}^{2}$ until she reaches a velocity of $6.3 \mathrm{~m} / \mathrm{s}$. She then continues running with this constant velocity.
a) How far has she run after 59.7 s?
b) What is the velocity of the runner at this point?

Added by Anthony D.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Prabhu Ramji

10/15/2022

Step 1

3 m/s using the formula $ t = \frac{v_f - v_i}{a} $, where $ v_f = 6.3 \, \text{m/s} $, $ v_i = 0 \, \text{m/s} $, and $ a = 1.25 \, \text{m/s}^2 $. Plugging in the values, we get: \[ t = \frac{6.3 - 0}{1.25} = 5.04 \, \text{s} \] Show more…

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A runner of mass 57.5 kg starts from rest and accelerates with a constant acceleration of $1.25 \mathrm{~m} / \mathrm{s}^{2}$ until she reaches a velocity of $6.3 \mathrm{~m} / \mathrm{s}$. She then continues running with this constant velocity. a) How far has she run after 59.7 s? b) What is the velocity of the runner at this point?