A student drives 40 km south in an attempt to get to a science fair competition before realizing he missed the exit. He turns around and drives back north 15 km before arriving. The total time of travel was 0.75 hr. What is his speed? What is his velocity?
Displacement, Velocity and Acceleration
In classical mechanics, kinematics deals with the motion of a particle. It deals only with the position, velocity, acceleration, and displacement of a particle. It has no concern about the source of motion.
Linear Displacement
The term "displacement" refers to when something shifts away from its original "location," and "linear" refers to a straight line. As a result, “Linear Displacement” can be described as the movement of an object in a straight line along a single axis, for example, from side to side or up and down. Non-contact sensors such as LVDTs and other linear location sensors can calculate linear displacement. Non-contact sensors such as LVDTs and other linear location sensors can calculate linear displacement. Linear displacement is usually measured in millimeters or inches and may be positive or negative.
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1. A student drives 40 km south in an attempt to get to a
science fair competition before realizing he missed the exit.
He turns around and drives back north 15 km before
arriving. The total time of travel was 0.75 hr. What is his
speed? What is his velocity?
2. A bus leaves Houston at 6:00 am headed toward Austin at a
constant speed of 54.3 miles/hour. If Austin is located 190
miles west of Houston, approximately when will the bus
arrive in Austin?
3. A girl rides her moped 5 km east and then turns around and
rides 2 km west. The entire trip takes fifteen minutes. What
are her average speed and velocity?
4.
Match each letter to the correct displacement vs. time graph.
7.
8.
9.
d.
10.
d
11.
d
12.
a. Moving fast, constant speed
f.
gradually decreasing speed
b. Moving slrow, constant SPeed](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F63dc274e-bf33-4f2c-8036-f3a53b76c7c7%2F059c7619-3c97-4c4b-a9fd-1c9d849564de%2Fuvmsq8c_processed.png&w=3840&q=75)
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