An object travels 24 m in 3 s and then another 15 m in 2 s. What is the average speed of the object?

Options

A. 7.8 `s^(-1)`
B. 7.8 `ms^(-1)`
C. 8.0 m
D. 6.67 `ms^(-1)`

Answer

To find the average speed of the object, we can follow these steps:

### Step 1: Calculate the total distance traveled
The object travels two distances:
- First distance = 24 m
- Second distance = 15 m

Total distance = First distance + Second distance
Total distance = 24 m + 15 m = 39 m

### Step 2: Calculate the total time taken
The object takes two time intervals:
- First time = 3 s
- Second time = 2 s

Total time = First time + Second time
Total time = 3 s + 2 s = 5 s

### Step 3: Calculate the average speed
The formula for average speed is:
Average Speed = Total Distance / Total Time

Substituting the values we calculated:
Average Speed = 39 m / 5 s = 7.8 m/s

### Final Answer
The average speed of the object is **7.8 m/s**.

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