toy car

Apuntes

• Equipment for Measuring Distance and Time: Distance: ruler or measuring tape Time: stopwatch or timer • How Chen Calculates the Average Speed: Chen measures the distance the toy car travels and records the time it takes to cover that distance. To find the average speed, he divides the distance by the time taken. Specifically, he uses the formula: Average speed = Distance / Time • Analysis of Results with Different Angles of the Slope: Look at the results: | Angle of slope in degrees | Distance in meters | Time in seconds | Average speed in m/s | |---------------------------|---------------------|----------------|---------------------| | 10 | 1.0 | 1.6 | 0.63 | | 20 | 1.0 | 2.0 | 0.50 | | 30 | 1.0 | 1.1 | 0.91 | Chen makes a prediction: "The greater the angle of the slope, the greater the speed of the car." **Support for his prediction:** The average speed increases when the angle increases from 10° to 30°, supporting the idea that a steeper slope results in a higher speed. *...