The distance traveled by the elapsed time.
Distance and Time Traveled
| Elapsed time (min) | Distance traveled (m) |
|---|---|
| 0 | 0 |
| 1 | 1.07 |
| 2 | 1.83 |
| 3 | 1.83 |
| 4 | 2.90 |
Based on these data, what happened between 2 minutes and 3 minutes?
A. The snail stopped moving.
B. The snail increased its speed.
C. The snail changed direction.
D. The snail decreased its speed.
Answer (1)
Calculate the distance traveled between 2 and 3 minutes: 1.83 − 1.83 = 0 .
Since the distance traveled is 0, the snail stopped moving.
The correct answer is A.
The snail stopped moving between 2 and 3 minutes. A
Explanation
Understanding the Problem We are given a table that shows the distance traveled by a snail at different times. We need to determine what happened between 2 minutes and 3 minutes.
Calculating the Distance Traveled At 2 minutes, the snail has traveled 1.83 meters. At 3 minutes, the snail has traveled 1.83 meters. To find the distance traveled between 2 and 3 minutes, we subtract the distance at 2 minutes from the distance at 3 minutes: 1.83 − 1.83 = 0
Determining What Happened Since the distance traveled between 2 and 3 minutes is 0 meters, the snail stopped moving during that time.
Final Answer Therefore, the correct answer is A. The snail stopped moving.
Examples
Understanding changes in distance over time is crucial in many real-world scenarios. For example, consider tracking the movement of a delivery vehicle. By analyzing the distance traveled at different times, we can determine if the vehicle is moving at a constant speed, speeding up, slowing down, or stopped. This information can be used to optimize delivery routes, improve fuel efficiency, and ensure timely arrival of goods. Similarly, in sports, analyzing the distance covered by an athlete during a game helps coaches assess their performance and make strategic decisions.
