In an experiment to measure the speed of a moving ball, it is observed that the ball covers a distance of 5 m and 20 cm in 4 seconds before it comes to a stop. Calculate the speed of the ball in `m//s`.

Answer

To calculate the speed of the ball in meters per second, we can follow these steps:

### Step 1: Convert the distance into meters
The total distance covered by the ball is given as 5 meters and 20 centimeters. We need to convert the entire distance into meters.

- 20 centimeters can be converted to meters:
\[ 20 \text{ cm} = \frac{20}{100} \text{ m} = 0.2 \text{ m} \]

- Now, add this to the 5 meters:
\[ \text{Total distance} = 5 \text{ m} + 0.2 \text{ m} = 5.2 \text{ m} \]

### Step 2: Use the formula for speed
The formula for speed is given by:
\[ \text{Speed} = \frac{\text{Distance}}{\text{Time}} \]

### Step 3: Substitute the values into the formula
We have the total distance as 5.2 meters and the time taken as 4 seconds. Now, substitute these values into the formula:
\[ \text{Speed} = \frac{5.2 \text{ m}}{4 \text{ s}} \]

### Step 4: Calculate the speed
Now, perform the division:
\[ \text{Speed} = 1.3 \text{ m/s} \]

### Final Answer
The speed of the ball is **1.3 m/s**.

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