Answer:The average speed of the bird can be calculated using the formula:
average speed = distance ÷ time
where distance is given in kilometres (km) and time is given in seconds (s).
Given that the bird travelled 6 km in 400 seconds, we can substitute these values into the formula to get:
average speed = 6 km ÷ 400 s
To convert km to m, we multiply by 1000.
average speed = 6 km ÷ 400 s × 1000 m/km
Simplifying this expression gives:
average speed = 15 m/s (to 2 decimal places)
Therefore, the average speed of the bird is 15 m/s.
Step by step solution:
- Convert the distance from km to m by multiplying it by 1000
- Substitute the values into the formula: average speed = distance ÷ time
- Simplify the expression to get the answer in m/s.
Explanation: