Picnickers see a lightning flash and hear the resulting thunder 5 seconds later. The storm is traveling at a rate of 21 km/hr. Use 344 m/s for the speed of sound. (a) Roughly how far away is the storm in miles? Don't use this number for parts (b) thru (e) (b) How far away is the storm (hint: use 344 m/s...)? (c) How fast is the storm in m/s? (d) How long do the picnickers have before the storm arrives (sec)? (e) How long do the picnickers have before the storm arrives (min)?
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.
Picnickers see a lightning flash and hear the resulting thunder 5 seconds later. The storm is traveling at a rate of 21 km/hr.
Use 344 m/s for the speed of sound.
(a) Roughly how far away is the storm in miles?
Don't use this number for parts (b) thru (e)
(b) How far away is the storm (hint: use 344 m/s...)?
(c) How fast is the storm in m/s?
(d) How long do the picnickers have before the storm arrives (sec)?
(e) How long do the picnickers have before the storm arrives (min)?
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