A model rocket is launched straight upward with an initial speed of 42.0 m/s. It accelerates with a constant upward acceleration of 3.00 m/s2 until its engines stop at an altitude of 100 m. (a) What can you say about the motion of the rocket after its engines stop? (b) What is the maximum height reached by the rocket? m (c) How long after liftoff does the rocket reach its maximum height? s (d) How long is the rocket in the air? 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.
A model rocket is launched straight upward with an initial speed of 42.0 m/s. It accelerates with a constant upward acceleration of 3.00 m/s2 until its engines stop at an altitude of 100 m.
m
(c) How long after liftoff does the rocket reach its maximum height?
s
(d) How long is the rocket in the air?
s
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