Question
Activity 2: Calculating Speed
Directions: Solve the following problems using GRESA method.
- At what speed did a plane fly if it traveled 1760 meters in 8 seconds?
- A boy walks at a speed of
. How much time does he take to walk a distance of 20 ky
- A cyclist covers a distance of 15 miles in 2 hrs. Calculate his speed.
- If a person drives his car in the speed of 50 miles
, how far can he cover in 2.5 hours?
- The train travelled 800 miles in 2.5 hrs . What is its speed?
Directions: Solve the following problems using GRESA method.
Ask by Daniel Ellis. in the Philippines
Jan 23,2025
Upstudy AI Solution
Tutor-Verified Answer
Answer
- The plane flew at 220 meters per second.
- The boy takes 5 hours to walk 20 km.
- The cyclist’s speed is 7.5 miles per hour.
- The person can cover 125 miles in 2.5 hours.
- The train’s speed is 320 miles per hour.
Solution
Sure! Let’s solve each of these problems using the GRESA method, which stands for:
- Goal: What you need to find.
- Relevant information: What is given.
- Equip: The formula or method to use.
- Solve: Perform the calculations.
- Answer: The final result.
Problem 1
At what speed did a plane fly if it traveled 1760 meters in 8 seconds?
-
Goal:
Find the speed of the plane. -
Given:
- Distance = 1760 meters
- Time = 8 seconds
-
Equip (Formula):
-
Solve:
-
Answer:
The plane flew at a speed of 220 meters per second.
Problem 2
A boy walks at a speed of
. How much time does he take to walk a distance of 20 km?
-
Goal:
Determine the time taken to walk 20 km. -
Given:
- Speed = 4 km/hr
- Distance = 20 km
-
Equip (Formula):
-
Solve:
-
Answer:
The boy takes 5 hours to walk 20 kilometers.
Problem 3
A cyclist covers a distance of 15 miles in 2 hours. Calculate his speed.
-
Goal:
Find the cyclist’s speed. -
Given:
- Distance = 15 miles
- Time = 2 hours
-
Equip (Formula):
-
Solve:
-
Answer:
The cyclist’s speed is 7.5 miles per hour.
Problem 4
If a person drives his car at the speed of 50 miles/hr, how far can he cover in 2.5 hours?
-
Goal:
Calculate the distance covered. -
Given:
- Speed = 50 miles/hr
- Time = 2.5 hours
-
Equip (Formula):
-
Solve:
-
Answer:
The person can cover 125 miles in 2.5 hours.
Problem 5
The train traveled 800 miles in 2.5 hours. What is its speed?
-
Goal:
Determine the train’s speed. -
Given:
- Distance = 800 miles
- Time = 2.5 hours
-
Equip (Formula):
-
Solve:
-
Answer:
The train’s speed is 320 miles per hour.
Feel free to reach out if you have any more questions or need further assistance!
Answered by UpStudy AI and reviewed by a Professional Tutor
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The Deep Dive
Did you know that the concept of speed dates back to the ancient Greeks? They first studied motion in terms of distance and time, laying the groundwork for what we now know. Figures like Aristotle and Archimedes pondered over the nature of movement, and their ideas spurred the development of physics as a science, leading to the formulas we use today to calculate speed!
In real-world scenarios, calculating speed can help in various activities, from planning your travel arrangements to ensuring you’re keeping within speed limits while driving. For instance, understanding how long it takes to traverse a specific distance can help you estimate your arrival time and make informed decisions, whether you’re driving to work or embarking on a road trip. So, the next time you grab your keys, remember that those pesky speed calculations could just save you from being late!