v (m s) 61 Jun'o8 10 t (s) 15 20 -6 An athlete runs in a straight line from point A to point B, and back to point A. The diagram shows the (t, v) graph for the motion of the athlete. The graph consists of three straight line segments. (i) Calculate the initial acceleration of the athlete. [2] (ii) Calculate the total distance the athlete runs. [3] (iii) Calculate the velocity of the athlete when t = 17. [3]
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.
![v (m s-')
Jun'o8
10
10
15
>t (s)
20
An athlete runs in a straight line from point A to point B, and back to point A. The diagram shows the
(t, v) graph for the motion of the athlete. The graph consists of three straight line segments.
(i) Calculate the initial acceleration of the athlete.
[2]
(ii) Calculate the total distance the athlete runs.
[3]
(iii) Calculate the velocity of the athlete when t = 17.
[3]
the time t is in seconds, the car runs](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fbc5a7f44-f883-4cf2-8c1e-fbb6272dba60%2Fc95564aa-c9c0-400c-95b6-5ef19c61b145%2Fokjaqxl_processed.jpeg&w=3840&q=75)
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