A girl on a bicycle drags a wagon full of newspapers at .80 m/s for 30 min. using a force of 40 N. How much work is done?
d = 80m/s * 30min * 60s/min = 1440 m.
W = F*d = 40 * 1440 = 57,600 Joules.
To know all the physics formula
To calculate the work done, you need two pieces of information:
1. Force applied: In this case, the force applied is given as 40 N.
2. Distance covered: To find the distance, you need the speed and the time. The speed is given as 0.80 m/s, and the time is given as 30 minutes. However, it is important to work with consistent units, so we need to convert the time to seconds.
To convert minutes to seconds, remember that there are 60 seconds in a minute. Therefore, 30 minutes can be multiplied by 60 to get the equivalent time in seconds: 30 minutes * 60 seconds/minute = 1800 seconds.
Now that we have all the necessary information, we can calculate the work done using the formula:
Work (W) = Force (F) * Distance (D)
We have the force (F) as 40 N, and to find the distance (D), we need to use the formula:
Distance (D) = Speed (S) * Time (T)
Plugging in the given values:
Distance (D) = 0.80 m/s * 1800 s = 1440 meters
Now we can calculate the work:
Work (W) = Force (F) * Distance (D) = 40 N * 1440 m = 57600 joules
Therefore, the work done by the girl on the bicycle dragging the wagon full of newspapers is 57600 joules.