Initially stationary, a train has a constant acceleration of 0.3 m/s2. (a) What is its speed after 14 s? m/s (b) What is the total time required for the train to reach a speed of 25 m/s? s A rocket accelerates from rest at a rate of 70 m/s2. (a) What is its speed after it accelerates for 43 s? m/s (b) How long does it take for the rocket to reach a speed of 7,700 m/s?
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.
Initially stationary, a train has a constant acceleration of 0.3 m/s2.
m/s
(b) What is the total time required for the train to reach a speed of 25 m/s?
s
m/s
(b) How long does it take for the rocket to reach a speed of 7,700 m/s?
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