Based on the data in the table, the best conclusion would be: A: Different surfaces affect how fast a toy car accelerates.
- The student conducted four trials, each with a different material covering the ramp.
- The recorded times for each trial are as follows: W-4, X-8, Y-7, and Z-5.
- Since the length of the ramp is constant at 1 m, the time it takes for the car to roll down should be the same for each trial if factors like gravity and air resistance have little effect.
- However, the recorded times vary, indicating that the different materials covering the ramp have an impact on the car's acceleration.
- We can conclude that different surfaces create different levels of friction between the car and the ramp, resulting in varying rates of acceleration and different times to complete the ramp.
Based on the data in the table, the best conclusion is that A: different surfaces affect how fast a toy car accelerates.
The question probable may be:
A student lets a toy car roll four times down a ramp that is 1 m long. Each time the student covers the surface of the ramp with a different material. The student measures the time it takes the car to roll down the ramp and records the results in the table below. Which of these would be the best conclusion based on the data in the table?
Table:
W-4
X-8
Y-7
Z-5
Which of these would be the best conclusion based on the data in the table?
A. Different surfaces affect how fast a toy car accelerates.
B. Different toy cars travel at different speeds.
C. Gravity has little effect on the speed of toy cars on different surfaces.
D. Air resistance is the greatest factor in limiting the acceleration of different toy cars.