Science and Technology in Everyday Life：練習問題

Health guidelines suggest that when using electronic products like tablets or computers, it is important to follow specific rules for eye health. What is the recommended practice after using a screen for 20 minutes?

An instructor explains that friction acts in the opposite direction of an object's motion. Which of the following real-life observations best illustrates an object coming to a stop specifically because of the friction between its base and the ground surface?

A student is conducting an experiment to understand how surface texture influences the distance a marble travels. Based on the principle that friction is a resistive force acting between contact surfaces, which of the following real-world examples best demonstrates an object slowing down primarily due to the friction between two solid surfaces?

When analyzing the forces involved in transportation, engineers must account for resistance. Which of the following scenarios best illustrates the concept of an object slowing down and stopping primarily because of the frictional force generated between two contact surfaces?

In a physics workshop, students are asked to identify instances where motion is resisted by contact forces. Which of the following everyday situations best exemplifies an object decelerating and coming to a complete stop primarily due to friction between its surface and the surface it is moving on?

Satellite technology is a major part of global aerospace development that has significantly improved our daily lives. Describe two ways satellite technology is used in Science and Technology in Everyday Life, and for each way, explain how it benefits humans.