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Basic Physics (IUP)

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Evaluation

2024_MID_Basic-PhysicsDownload
  1. Kinematics (Newton’s Law, Free Body Diagram)
  2. Energy, Work, Momentum and Impuls (collision)
  3. Rotational motion, Energy conservation, work-energy principle
  4. Fluid mechanics (Bernoulli)
Evaluation for students:
1. Few students struggled to grasp the concept of:
– Differentiating the position equation š‘„(š‘”) to get the velocity equation v(t).
– Differentiating the velocity equation to get the acceleration equation a(t).
More students still failed to draw Free Body Diagram correctly and derive the formula from Newton’s law.
2. – To determine the work exerted, students should draw the components of the force projected onto the axis of motion (the x-axis).
Method 2 exerts less work, provided the same force š¹ is applied in both methods.
– In the topic of energy, some students still struggle to identify which components of energy (potential or kinetic) are involved in a given situation.
– For momentum and impulse, the concept is relatively straightforward, but some students seem to have difficulty visualizing how the scenario works.
3. Question 3 received the lowest scores, likely because it covered the harder topic in the exam. Students may benefit from more practice at home and additional discussions in class to improve their understanding.
– Ensure that students correctly apply energy conservation, accounting for both translational and rotational kinetic energy. In the second part, students should use the work-energy principle to calculate the distance traveled on the horizontal surface, considering the frictional force dissipates the cylinder’s kinetic energy.
4. I expect most students will benefit from solving this question, as it is one of the simpler cases requiring fewer steps. However, some students failed to write the Bernoulli principle formula (conservation).
Note for me lecturer:
1. In class, I did not emphasize the importance of differentiating to obtain velocity and acceleration, which led to confusion among some students. Every student should first be able to draw a correct Free Body Diagram before moving on to the next chapter.

2. Overall, it seems students need to strengthen their ability to solve basic cases before tackling more advanced ones, such as energy conservation, simple collision problems, and Bernoulli’s principle.

3. Once they master the basics, students should be challenged with the next topic on rotational motion and a bit more complex concepts, like the work-energy principle.