Question

a rock with mass of 5.0 kg is carried up a small hill 10 meters high. how much work had to be done in carrying the rock up hill?
w=
4900 j
impossible to tell because velocity not given
490 j
245 j

Explanation:

Step1: Calcular la fuerza gravitacional

La fuerza gravitacional \( F = mg \), donde \( m = 5.0\,\text{kg} \) y \( g = 9.8\,\text{m/s}^2 \).
\( F=5.0\times9.8 = 49\,\text{N} \)

Step2: Calcular el trabajo

El trabajo \( W = Fd \), donde \( F = 49\,\text{N} \) y \( d = 10\,\text{m} \).
\( W=49\times10=490\,\text{J} \)

Answer:

490 J