第二章第九题（物理：加速度）(Physics: acceleration)

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wx63d882c621cf8 2023-01-31 11:08:18 ©著作权

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2.9（物理：加速度）平均加速度定义为速度的变化量除以这个变化所用的时间，如下式所示：

a = (v1 - v0) ÷ t

编写程序，提示用户输入以米/秒为单位的起始速度v0，以米/秒为单位的终止速度v1，以及以秒为单位的经过时间t，最后显示平均加速度。

下面是一个运行示例：
Enter v0,v1,and t:5.5 50.9 4.5
The average acceleration is 10.0889

2.9(Physics: acceleration) Average acceleration is defined as the change of velocity divided by the time taken to make the change, as given by the following formula:

a = (v1 - v0) ÷ t

Write a program that prompts the user to enter the starting velocity v0 in meters/ second, the ending velocity v1 in meters/second, and the time span t in seconds, then displays the average acceleration.

Here is a sample run:
Enter v0,v1,and t:5.5 50.9 4.5
The average acceleration is 10.0889

下面是参考答案代码:

import java.util.*;


public class AverageAccelerationQuestion9 {
	public static void main(String[] args) {
		double AverAcceleration,V0,V1,T;
		
		System.out.print("Enter v0, v1, and t : ");
		Scanner SpeedTimeInput = new Scanner(System.in);
		
		V0 = SpeedTimeInput.nextDouble();
		V1 = SpeedTimeInput.nextDouble();
		T = SpeedTimeInput.nextDouble();
		
		AverAcceleration = (V1 - V0) / T;
		
		System.out.println("The average acceleration is " + AverAcceleration);
	}
}