A jeepney runs for 3 hours to cover a 300 km distance. What is its speed? * 1 point A. 90 km/hr B. 100 km/hr C. 110 km/hr D. 120 km/hr
The correct answer and explanation is:
Correct Answer: B. 100 km/hr
Explanation:
To find the speed of the jeepney, we use the basic formula from physics: Speed=DistanceTime\text{Speed} = \frac{\text{Distance}}{\text{Time}}
We are told:
- The distance traveled is 300 kilometers
- The time taken is 3 hours
Now plug in the values: Speed=300 km3 hr=100 km/hr\text{Speed} = \frac{300 \text{ km}}{3 \text{ hr}} = 100 \text{ km/hr}
So, the jeepney is traveling at 100 kilometers per hour, which corresponds to option B.
Understanding the Concept Further:
Speed is a measure of how quickly an object moves from one place to another. It’s an important concept in both everyday life and scientific applications. The unit of speed here is kilometers per hour (km/hr), which tells us how many kilometers are covered in one hour.
For example:
- A speed of 100 km/hr means that the jeepney covers 100 kilometers in every hour.
- If it continues at this speed, it would cover:
- 200 km in 2 hours
- 300 km in 3 hours
- 400 km in 4 hours, and so on.
Why the Other Options Are Incorrect:
Let’s check the total distance each option would cover in 3 hours:
- A. 90 km/hr → 90 × 3 = 270 km ❌
- B. 100 km/hr → 100 × 3 = 300 km ✅
- C. 110 km/hr → 110 × 3 = 330 km ❌
- D. 120 km/hr → 120 × 3 = 360 km ❌
Only Option B gives the correct distance of 300 km in 3 hours, proving it is the correct speed.