Kinematics in One Dimension
14. Canada geese can fly up to 1045 km in one day when migrating south. With an average speed of 18.0 m/s, how long, in hours, does it take the geese to fly this distance? (4) (1km = 1000m, 1 hr = 3600s)
15. A train with an initial velocity of +28.6 m/s approaches a small town. The operator applies the brake, reducing the train's velocity to +11.4 m/s. If the average acceleration of the train during braking is –1.35 m/s2, for what elapsed time does the operator apply the brake?
Homework Answers
Follow the steps above to draw a pictorial representation of the following problem: A light train...
Follow the steps above to draw a pictorial representation of the following problem: A light train is traveling on a straight section of track at a constant speed of 15 m/s. As it approaches the next station, it starts to slow down at a rate of 5 m/s2 until it stops at the station. From the moment the train starts to slow down, how long does it take for the train to reach the station? Note that you are not...
TACTICS BOX 1.5 Drawing a pictorial representation Draw a motion diagram. The motion diagram develops your...
TACTICS BOX 1.5 Drawing a pictorial representation
Draw a motion diagram. The motion diagram
develops your intuition for the motion and, especially important,
determines whether the signs of v? and
a? are positive or negative.
Establish a coordinate system. Select your axes
and origin to match the motion. For one-dimensional motion, you
want either the x axis or the y axis parallel to
the motion.
Sketch the situation. Not just any sketch. Show
the object at the beginning of the motion, at...
TACTICS BOX 1.5 Drawing a pictorial representation
Draw a motion diagram. The motion diagram
develops your intuition for the motion and, especially important,
determines whether the signs of v? and
a? are positive or negative.
Establish a coordinate system. Select your axes
and origin to match the motion. For one-dimensional motion, you
want either the x axis or the y axis parallel to
the motion.
Sketch the situation. Not just any sketch. Show
the object at the beginning of the motion, at...
Most questions answered within 3 hours.
-
1. Which of the following is NOT an argument that McMahan uses
to show that jus...
asked 16 minutes ago -
A crate slides up a frictionless slope. At the end of 3 seconds
its velocity is...
asked 33 minutes ago -
Use the following information to answer the next seven
questions.
Suppose there are three potential states...
asked 29 minutes ago -
If we only have interstitial and substitutional diffusion, then
what do we consider the process of...
asked 45 minutes ago -
You look at yourself in a shiny 9.6-cm-diameter Christmas tree
ball.
If your face is 21.0...
asked 47 minutes ago -
If we were to measure the relaxation time of a muscle after
undergoing tetanus compared to...
asked 47 minutes ago -
4CO(g) + 8H2(g) -----> 3CH4(g) +
CO2(g) + 2H2O(l)
Use the following data as needed to...
asked 50 minutes ago -
without using map
1. Write a C++ program to find out the top 10 words in...
asked 1 hour ago -
1)Calculate the percent ionization of a
0.330 M solution of hypochlorous
acid.
% Ionization = %...
asked 1 hour ago -
1a) How many grams of K2SO4 are in 250mL
of 0.11 M K2SO4 solution?
_____ g...
asked 57 minutes ago -
The vapor pressure of a solution containing 38.7 g glycerin
(C3H8O3) in 146.2 g ethanol (C2H5OH)...
asked 1 hour ago -
A physics major is cooking breakfast when he notices that the
frictional force between the steel...
asked 1 hour ago