7. A police officer uses the formula S = 15.9 √df to estimate the speed of a vehicle when it crashed. In the formula, S kilometres per hour is the speed of the vehicle, d metres is the length of the skid marks left on the road, and fis the coefficient of friction, a measure of the traction between the road surface and the vehicle's tires. a) The skid marks left on a dry road measure 40 m. What was the speed of the vehicle if f= 0.85? for a dry road? b) A car travelling at 30 km/h skids and crashes in an icy parking lot. Estimate the length of the skid marks at the crash site if f= 0.35 for an icy road.
7. A police officer uses the formula S = 15.9 √df to estimate the speed of a vehicle when it crashed. In the formula, S kilometres per hour is the speed of the vehicle, d metres is the length of the skid marks left on the road, and fis the coefficient of friction, a measure of the traction between the road surface and the vehicle's tires. a) The skid marks left on a dry road measure 40 m. What was the speed of the vehicle if f= 0.85? for a dry road? b) A car travelling at 30 km/h skids and crashes in an icy parking lot. Estimate the length of the skid marks at the crash site if f= 0.35 for an icy road.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter2: Linear Equations
Section2.7: Litereal Equations And Dimensional Analysis
Problem 4GP
Related questions
Question
pls help
Transcribed Image Text:7. A police officer uses the formula S
=
15.9 √df to estimate the speed of a vehicle when
it crashed. In the formula, S kilometres per hour is the speed of the vehicle, d metres is
the length of the skid marks left on the road, and fis the coefficient of friction, a measure
of the traction between the road surface and the vehicle's tires.
a) The skid marks left on a dry road measure 40 m. What was the speed of the vehicle if f=
0.85?
for a dry road?
b) A car travelling at 30 km/h skids and crashes in an icy parking lot. Estimate the length of the
skid marks at the crash site if f= 0.35 for an icy road.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 2 steps with 2 images
Recommended textbooks for you
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill
Algebra: Structure And Method, Book 1
Algebra
ISBN:
9780395977224
Author:
Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:
McDougal Littell
Intermediate Algebra
Algebra
ISBN:
9781285195728
Author:
Jerome E. Kaufmann, Karen L. Schwitters
Publisher:
Cengage Learning
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill
Algebra: Structure And Method, Book 1
Algebra
ISBN:
9780395977224
Author:
Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:
McDougal Littell
Intermediate Algebra
Algebra
ISBN:
9781285195728
Author:
Jerome E. Kaufmann, Karen L. Schwitters
Publisher:
Cengage Learning
Elementary Geometry For College Students, 7e
Geometry
ISBN:
9781337614085
Author:
Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:
Cengage,
Holt Mcdougal Larson Pre-algebra: Student Edition…
Algebra
ISBN:
9780547587776
Author:
HOLT MCDOUGAL
Publisher:
HOLT MCDOUGAL
Mathematics For Machine Technology
Advanced Math
ISBN:
9781337798310
Author:
Peterson, John.
Publisher:
Cengage Learning,