You’re driving your car towards an intersection at a constant speed of 11.0 m/s. A Porsche is stopped behind the line at the red light. At the moment when you are 15.0 m from the line, the light turns green, and the Porsche begins to accelerate from rest at a constant rate of 3.00 m/s2. You continue at the same constant speed. (a) How many seconds after the light turns green do you pass the Porsche? (b) How far (in meters) from the stop line do you pass the Porsche? (c) As the Porsche keeps accelerating, it eventually catches up to you again. How many seconds after the light turns green does it pass you?
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.
You’re driving your car towards an intersection at a constant speed of 11.0 m/s. A Porsche is stopped behind the line at the red light. At the moment when you are 15.0 m from the line, the light turns green, and the Porsche begins to accelerate from rest at a constant rate of 3.00 m/s2. You continue at the same constant speed. (a) How many seconds after the light turns green do you pass the Porsche? (b) How far (in meters) from the stop line do you pass the Porsche? (c) As the Porsche keeps accelerating, it eventually catches up to you again. How many seconds after the light turns green does it pass you? (d) How far (in meters) from the stop line does it pass you?
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