A car travels 25 mi/hr for 15 minutes. It then goes 40 mi/hr for the next 10 minutes. Finally it travels for the last 5 minutes at 20 mi/hr. a) What is the average speed over the entire 1/2 hr? b) What was its average speed for the first 25 minutes? c) How far will it have traveled after 25 minutes?
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 25 mi/hr for 15 minutes. It then goes 40 mi/hr for the next 10 minutes.
Finally it travels for the last 5 minutes at 20 mi/hr.
a) What is the average speed over the entire 1/2 hr?
b) What was its average speed for the first 25 minutes?
c) How far will it have traveled after 25 minutes?
d) How far will it have traveled after 1/2 hr?
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