Sound travels at a speed of 330 m/s. If a firecracker exploded 3625 m away from you, how long does it take the sound of the explosion to reach 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.
a. Sound travels at a speed of 330 m/s. If a firecracker exploded 3625 m away from you, how long does it take the sound of the explosion to reach you? (seconds)
b. A car traveling at a constant speed of 33.5 m/s passes a trooper hidden behind a billboard. One second after the speeding car passes the billboard, the trooper sets off in chase with a constant acceleration of 3.30 m/s2. How long does it take the trooper to overtake the speeding car? Solve this problem by a graphical method.
-On the same graph, plot position versus time for the car and the trooper.
-From the intersection of the two curves, read the time at which the trooper overtakes the car. (seconds)
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