Question: A sprinter performs a 100-m dash. During the initial s 27 = 27 m he accelerates, obtaining an average acceleration a = 2.2 m/s 2

A sprinter performs a 100-m dash. During the initial s₂₇ = 27 m he accelerates, obtaining an average acceleration a = 2.2 m/s². After the first 27 m he holds the velocity constant. Between the 90m mark and the finish line he has an average acceleration of a_f = -0.1 m/s².

a) What is his final velocity v_f at the end of the first 27 meters?

b) What is his total race time?

c) What is his average velocity v for the 100 m dash?

SHOW ALL the WORK.

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Physics Questions!

A sprinter performs a 100 m dash. During the initial s25 = 25m he accelerates, obtaining an average acceleration a = 2.3 m/s2 . After the first 25m he holds the velocity constant. Between the 90m...

Acceleration: Instantaneous and Constant Practice Sheet Show your work. No work shown, NO CREDIT. A race car's velocity increases from 4.0 m/s to 36 m/s over a 4.0 s time interval. What is its...

Directions: Solve the following problems. 1. A car in front of the school goes from rest to 27 m/s in 3.0 seconds. What is its acceleration (assuming it is constant)? 2. A rocket starts from rest and...

Please answer all the questions properly all the relevant in is provided. Pls try your best! im Counting on u! Thank uuuuu :) Please write your answers (showing all steps) neatly and clearly. This...

-9.8 m/x Since v is steadily decreasing, the acceleration is constant and negative. s.com to access assigned homework and self-study tools such as actice quizzes, video solutions to problems, and a...

Probability assignment, Three similar methods of determining the biological oxygen demand of a waste stream are compared. Two technicians who are experienced in this type of work are available, but...

Help me please, Kindly answer this with complete solution and clear explanation. Thank you. . Motion can be described as a change in position. However, to say that there is a change in posrtlon we...

MH0007 0 0 7 7645065 Ca s ey B u rt Fra nk T. R o tha e rm e l Bank of America (in 2010) and the New Financial Landscape Stephanie Milner spent the fall and winter of 2008-2009 like many Americans,...

2.23 Cost of capital (40%) Calculate the company?s cost of equity using various methods (at least 2); showing your calculations and detailing the source of your data. Calculate the company?s cost of...

Final Review Multiple Choice Identify the choice that best completes the statement or answers the question. ____ 1. Which of the following is a pair of scalar quantities? a. Speed Distance c....