When an object is falling because of gravity, the following formula can be used

Question

When an object is falling because of gravity, the following formula can be used to determine the distance the object falls in a specific time period: d=1/2gt^2(squared)
The variables in the formula are as follows: d is the distance in meters, g is 9.8, and t is the amount of time in seconds that the object has been falling.

Create a VB app that allows the user to enter the amount of time that an object has fallen and then displays the distance that the object fell. The app should have a function named FallingDistance. The FallingDistance function should accept an objects falling time (in seconds) as an argument. The function should return the distance in meters that the object has fallen during that time interval.

·   Add the following instructions to the instructions in the text:

Calculate the distance 3 times using a loop. (So you will call the function from within the loop.

1.The first time with the time that the user entered.

2. Next with the entered time * 2.

3. And again with the entered time * 3

Here is what I get:

Private Sub btnCalculate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCalculate.Click

Dim distance As Decimal 'Distance to calcualte

Dim gravity As Decimal = 9.8D 'Gravity of the object

Dim time As Decimal 'Time in seconds

If TxtTime.Text = "" Then

MessageBox.Show("please enter the time", "Info")

Else

'gets the time from the text box.

time = CDec(TxtTime.Text)

'calculates the distance

distance = CDec(0.5 * gravity * Math.Pow(time, 2))

'displays the gravity

TxtDistance.Text = distance & " meters"

End If

End Sub

Can anyone help me with the loop section? I am really confused about it.

Thanks

Explanation / Answer

When an object is falling because of gravity, the following formula can be used

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