A car travels 21 miles in 20 minutes. a. How many hours did the car spend traveling? b. What was the average velocity of the car in miles per hour during its trip? c. After reaching its destination, suppose the car travels an additional 100 miles over 2.5 hours. Find the average velocity of the car in mph over this second trip. d. Find the average velocity of the car in mph over the combined legs of the trip. e. Draw and label a position vs. time graph showing the trip the car made. Include lines for each leg of the trip as well as the combined journey. f. Compare the slopes of each line. Are any of the average velocities the same? Should they be?
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.
A car travels 21 miles in 20 minutes.
a. How many hours did the car spend traveling?
b. What was the average velocity of the car in miles per hour during its trip?
c. After reaching its destination, suppose the car travels an additional 100 miles
over 2.5 hours. Find the average velocity of the car in mph over this second trip.
d. Find the average velocity of the car in mph over the combined legs of the trip.
e. Draw and label a position vs. time graph showing the trip the car made. Include
lines for each leg of the trip as well as the combined journey.
f. Compare the slopes of each line. Are any of the average velocities the same?
Should they be?
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