1. A car moving east accelerates from 22 m/s to 37 m/s in 9.2 s. What is the car's acceleration? What is the average velocity? How far did the car go during the acceleration?

College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
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Chapter3: Polynomial Functions
Section3.5: Mathematical Modeling And Variation
Problem 7ECP: The kinetic energy E of an object varies jointly with the object’s mass m and the square of the...
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As always you must show your work including the equations you are using. If you do not show
your work in a neat, organized and legible manner, you will not receive credit. Use extra paper
if needed. Don't forget units and significant figures.
Write out the equations for one dimensional motion with constant acceleration.
Ax =
Vr%=
Ax =
V? =
1. A car moving east accelerates from 22 m/s to 37 m/s in 9.2 s. What is the car's
acceleration? What is the average velocity? How far did the car go during the
acceleration?
A =
V%3D
Ax =
2. A lane lands with a velocity of 130m/s and accelerates at -5.7 m/s. What is the time
needed for he plane to come to rest? How far does the plane travel?
At =
Ax=
Transcribed Image Text:As always you must show your work including the equations you are using. If you do not show your work in a neat, organized and legible manner, you will not receive credit. Use extra paper if needed. Don't forget units and significant figures. Write out the equations for one dimensional motion with constant acceleration. Ax = Vr%= Ax = V? = 1. A car moving east accelerates from 22 m/s to 37 m/s in 9.2 s. What is the car's acceleration? What is the average velocity? How far did the car go during the acceleration? A = V%3D Ax = 2. A lane lands with a velocity of 130m/s and accelerates at -5.7 m/s. What is the time needed for he plane to come to rest? How far does the plane travel? At = Ax=
Expert Solution
Step 1
  1. Given :-

Initial speed of car (U) = 22 m/s

Final speed of car (V) = 37 m/s

Time taken (t) by car to reach at the speed of 37 m/s is 9.2 s.

To find the value of acceleration, we will use first equation of motion i.e. V = U + at

Using the above equation -

37 = 22 + a (9.2)

a = 1.63 m/s2

Next, we need to find average velocity.

Vavg = V+U2=22+372=29.5 m/s

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