A boy walks 50metres in 30 seconds.what is his speed in km/h
To find the speed in km/h, we need to convert the distance from meters to kilometers and the time from seconds to hours.
1 kilometer = 1000 meters
1 hour = 3600 seconds
So, the boy walks 50 meters in 30 seconds:
(50 meters / 1000) kilometers = 0.05 kilometers
(30 seconds / 3600) hours = 0.00833333333 hours
Now, we can calculate his speed:
speed = distance/time
speed = 0.05 kilometers / 0.00833333333 hours
speed ≈ 6 km/h
Therefore, the boy's speed is approximately 6 km/h.
To calculate the speed, we need to convert the distance and time to the same units. Since 1 kilometer is equal to 1000 meters and 1 hour is equal to 3600 seconds, we can convert the distance and time as follows:
Distance = 50 meters = 50/1000 = 0.05 kilometers
Time = 30 seconds = 30/3600 = 0.0083 hours
Now we can calculate the speed:
Speed = Distance / Time
= 0.05 km / 0.0083 hours
≈ 6.02 km/h (rounded to two decimal places)
Therefore, his speed is approximately 6.02 km/h.
To calculate the speed of the boy, we need to convert the distance he walked from meters to kilometers and the time from seconds to hours.
1. Convert distance from meters to kilometers:
- 1 kilometer = 1000 meters
- Therefore, 50 meters is equal to 50/1000 = 0.05 kilometers.
2. Convert time from seconds to hours:
- 1 hour = 3600 seconds
- Therefore, 30 seconds is equal to 30/3600 ≈ 0.008333 hours.
3. Now, we can calculate the speed using the formula:
Speed = Distance / Time
= 0.05 km / 0.008333 hours
≈ 6 km/h (rounded to one decimal place).
So, the boy's speed is approximately 6 km/h.