Solving Word Problems SPEED, DISTANCE and TIME | LET and Civil Service Exam Reviewer
TLDRIn this educational video, the teacher delves into the concepts of speed, distance, and time, particularly focusing on problems relevant to students preparing for licensure examinations and civil service tests. The video presents two distinct problems to illustrate the application of these concepts. The first problem involves calculating the speed of a plane that travels 395,000 meters in 90 seconds, using the formula speed = distance/time, and resulting in a speed of 43.9 meters per second. The second problem concerns an athlete who throws a flying disc 139 meters at an average speed of 13 meters per second, with the challenge being to find out how long the disc remains in the air. By applying the formula time = distance/speed, the video demonstrates how to solve for time, concluding that the disc was airborne for 10.7 seconds. The video is designed to be both informative and engaging, encouraging viewers to apply these fundamental principles to real-world scenarios.
Takeaways
- 📖 The video focuses on solving word problems involving speed, distance, and time, which are useful for students and adults preparing for licensure and civil service exams.
- 🎓 Shout outs are given to students dealing with these topics, emphasizing the video's educational purpose.
- 🎥 A previous video is referenced where the formula for calculating distance, speed, and time using a triangle method was derived, directing viewers for a recap.
- 📚 The key formulas used are speed = distance / time and time = distance / speed, highlighted through problem-solving examples.
- 📈 An example is worked through calculating the speed of a plane that travels 395,000 meters in 90 seconds, illustrating the application of the formula.
- 👀 Manual calculation steps are demonstrated, including simplifying the numbers by canceling out zeros for ease.
- 💻 The use of calculators is recommended for efficiency but manual computation is also showcased for understanding.
- 📄 Another problem example involves calculating how long a disc remains in the air if it travels 139 meters at an average speed of 13 meters per second.
- 🔥 Encouragement is offered to viewers facing exams with expressions like 'fighting', boosting morale and engagement.
- 📲 Calls to action include reminders to like and subscribe to the channel, helping to build a community and audience engagement.
Q & A
What is the main topic discussed in the video?
-The main topic discussed in the video is the relationship between speed, distance, and time, with a focus on solving problems involving these three variables.
What does the teacher suggest for students who are preparing for licensure examinations?
-The teacher suggests that students preparing for licensure examinations, as well as other examinations like civil service examinations, should pay attention to the topic of speed, distance, and time.
What is the formula for calculating speed?
-The formula for calculating speed is speed equals distance divided by time, which can be represented as speed = d/t.
In the first problem, what is the distance traveled by the plane?
-In the first problem, the plane travels a distance of 395,000 meters.
How many seconds does it take for the plane to travel the given distance in the first problem?
-It takes the plane 90 seconds to travel the given distance of 395,000 meters.
What is the speed of the plane in the first problem, in meters per second?
-The speed of the plane in the first problem is 43.9 meters per second.
What is the formula used to calculate the time a flying disc remains in the air in the second problem?
-The formula used to calculate the time a flying disc remains in the air is time equals distance divided by speed, represented as time = d/s.
How far did the flying disc travel in the second problem?
-The flying disc traveled a distance of 139 meters in the second problem.
What was the average speed of the flying disc in the second problem?
-The average speed of the flying disc in the second problem was 13 meters per second.
How long did the flying disc remain in the air in the second problem, in seconds?
-The flying disc remained in the air for 10.7 seconds in the second problem.
What advice does the teacher give to the viewers at the end of the video?
-The teacher advises viewers to learn from the video on how to calculate speed, distance, and time problems and encourages them to like and subscribe to the channel for more educational content.
Why is it important to understand the relationship between speed, distance, and time?
-Understanding the relationship between speed, distance, and time is important because it is a fundamental concept in physics and is applicable in various real-life situations, such as transportation, sports, and problem-solving in examinations.
Outlines
📚 Introduction to Speed, Distance, and Time Problems
The first paragraph introduces the topic of the video, which is about speed, distance, and time. The speaker, referred to as 'teacher', addresses students who are encountering such problems in various contexts, including licensure examinations for teachers and civil service examinations. The paragraph sets the stage for discussing two specific problems related to these concepts. The speaker also refers to a previous video where the distance, speed, and time were calculated and a formula was derived. The focus is on applying the formula to find either speed or time given the other two variables.
✈️ Calculating Speed Given Distance and Time
This paragraph presents the first problem, which involves calculating the speed of a plane that travels 395,000 meters in 90 seconds. The speaker explains the formula for speed (speed = distance/time) and demonstrates how to apply it by substituting the given values into the formula. The calculation is shown both manually and using a calculator, resulting in a speed of 43.9 meters per second for the plane.
🥏 Determining Time of Flight for a Thrown Disc
The second paragraph deals with the problem of calculating the time a flying disc remains in the air after an athlete throws it 139 meters at an average speed of 13 meters per second. The speaker uses the formula for time (time = distance/speed) to solve the problem. After substituting the given values into the formula, the time the disc remains in the air is calculated to be 10.7 seconds. The paragraph concludes with an encouragement for viewers to learn from the video and apply the knowledge to similar problems.
Mindmap
Keywords
💡Speed
💡Distance
💡Time
💡Calculator
💡Problem Solving
💡Plane
💡Flying Disc
💡Average Speed
💡Licensure Examination
💡Civil Service Examination
💡Educational Content
Highlights
The video discusses the relationship between speed, distance, and time.
It is aimed at helping students and adults prepare for licensure and civil service examinations.
The formula for calculating distance within time is derived using a triangle analogy.
The first problem involves calculating the speed of a plane that travels 395,000 meters in 90 seconds.
The speed is found by dividing the distance by the time.
The plane's speed is determined to be 43.9 meters per second.
The second problem involves calculating the time a flying disc remains in the air after being thrown 139 meters at an average speed of 13 meters per second.
The time in the air is calculated using the formula time equals distance divided by speed.
The disc's time in the air is calculated to be 10.7 seconds.
The video provides a step-by-step guide to solving speed, distance, and time problems.
The importance of understanding the basic formulae for speed, distance, and time is emphasized.
The video is designed to be accessible to viewers of all ages, including students and professionals.
A shout out is given to students and adults who are encountering this topic in their studies or exams.
The video encourages viewers to visit previous content for a more comprehensive understanding.
The use of manual computation and calculators is demonstrated for solving the problems.
The video concludes with an encouragement for viewers to like, subscribe, and follow for more educational content.
Practical applications of the speed, distance, and time formulae are shown through real-world problems.
The video provides a clear explanation of how to apply the formulae to find missing variables in given scenarios.
The educational content is structured to build on previously discussed material for continuity.
Transcripts
5.0 / 5 (0 votes)
Thanks for rating: