Learning Task 4. Doing Detective Work Read the passage below and answer the guide questions that follows: Supposed that you are an on-the-job trainee in a private investigating company tasked to investigate a "hit and run" case. The alleged suspect was captured by a CCTV camera driving a road leading to the place of incident. The suspect denied the allegation, saying that he was driving very slowly with a constant speed. Because of the short time difference when he was caught by the camera and when the accident happened, he insisted that it was impossible that he would already be at the place when the crime took place. But when you are viewing the CCTV footage, you noticed that his car has left oil spots on the road. When you checked the spots on the site of the accident, you found out that they are still evident. So, you began to wonder if the spots can be used to investigate the motion of the car driven by the suspect and check whether he was telling the truth or not. Examine the distances between the dots in the tape chart presented below: 01 1. 2. 3. 4. 2 Guide Questions: 5. 3 Figure 5. Tape Chart of the Oil Spots Left by the Car How will you compare the distances between the dots? What does the tape chart tell you about the speed of the car? Create a motion graph based on the tape chart. Analyze the motion graph and compare presented in the tape chart. the information Based on your investigation (tape chart and motion graph), prow whether the suspect is telling the truth or not?
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.
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