A particle's position is given by x = 6 − 9t + 1t2 (where t is in seconds and x is in meters). 1. What is its velocity at t = 1 s? (Indicate the direction with the sign of your answer.) -----m/s 2. What is its speed just then? -----m/s 3. Is there ever an instant when the velocity is zero? If so, give the time t; if not, say NONE
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 particle's position is given by x = 6 − 9t + 1t2 (where t is in seconds and x is in meters).
1. What is its velocity at t = 1 s? (Indicate the direction with the sign of your answer.)
-----m/s
2. What is its speed just then?
-----m/s
3. Is there ever an instant when the velocity is zero? If so, give the time t; if not, say NONE.
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