To determine the amount of work Pravat did on the bag of groceries, we use the standard formula for work done in physics:
[tex]\[ \text{Work} = \text{Force} \times \text{Distance} \][/tex]
Here's the step-by-step process:
1. Identify the given values:
- Force ([tex]\( F \)[/tex]) is [tex]\( 30 \, \text{N} \)[/tex] (Newtons).
- Distance ([tex]\( d \)[/tex]) is [tex]\( 0.5 \, \text{m} \)[/tex] (meters).
2. Substitute the given values into the formula:
[tex]\[ \text{Work} = 30 \, \text{N} \times 0.5 \, \text{m} \][/tex]
3. Calculate the result:
[tex]\[ \text{Work} = 30 \times 0.5 = 15 \, \text{J} \][/tex]
Thus, the work done by Pravat on the bag is [tex]\( 15 \, \text{J} \)[/tex]. So the correct answer is:
[tex]\[ \boxed{15 \, \text{J}} \][/tex]