How much work is done by a boy weighing 450. Newtons while carrying a 20.0 kilogram package up a 2.00 meter flight of stairs?

Given

F = 450 N
m = 20 kg
d = 2 m

W = Fd

The force on his feet is 450+20*g

work= forceonhisfeet*2m

25840

To find the amount of work done by the boy, we can use the formula:

Work (W) = Force (F) * Distance (d) * cos(theta)

In this case, the force exerted by the boy is equal to his weight, which is given as 450 Newtons. The distance is 2.00 meters, and the angle between the force applied and the direction of motion (represented by theta) is 0 degrees, since the force is applied vertically upwards. The cosine of 0 degrees is 1.

Using the formula, we can calculate the work:

Work = 450 N * 2.00 m * cos(0°)
Work = 450 N * 2.00 m * 1

Therefore, the work done by the boy is 900 Joules (J).