Speed-Time Equation: Calculate Time for 5m/s Speed Over 700m Distance

To solve this problem, we'll follow these steps:

• Step 1: Identify the given information
• Step 2: Apply the appropriate formula
• Step 3: Perform the necessary calculations

Now, let's work through each step:

Step 1: The problem provides us with a speed of $v = 5$ meters per second, and a distance of $d = 700$ meters.

Step 2: We'll use the formula $t = \frac{d}{v}$ to find the time.

Step 3: Substitute the given values into the formula:

$t = \frac{700}{5}$.

Compute the division:

$t = 140$ seconds.

Therefore, David runs for $140$ seconds.