Question

A student doing an activity lowers a 2.50 kg mass 10.0 m from the top of stadium bleachers. Which represents the amount of work done by the student

Answer 1

The amount of work done by the student is 245 Joules. Option B.

The work done, W, for any object is calculated using the formula:

`\[ W = m \cdot g \cdot h \]`

where:

-
`\( m \)` is the mass (2.50 kg),

-
`\( g \)` is the acceleration due to gravity (approximately 9.8 m/s²),

-
`\( h \)` is the height (10.0 m).

In this case:

`\[ W = 2.50 \, \text{kg} \cdot 9.8 \, \text{m/s}^2 \cdot 10.0 \, \text{m} \]`

`\[ W = 245 \, \text{Joules} \]`

Therefore, the amount of work done by the student is 245 Joules.

The complete question:

A student doing an activity lowers a 2.50 kg mass 10.0 m from the top of stadium bleachers. Which represents the amount of work done by the student

a) 0 J

b) 245 J

c) 2500 J

d) 25,000 J