High School

A box with a mass of 25 kg is lifted to a height of 3 meters in 2 seconds. How much work was done?

A. 735 J
B. 958 J
C. 245 J
D. 75 J

Answer :

Final answer:

The work done when lifting an object can be calculated using the formula: Work = force x distance. In this case, the work done is equal to 735 J.

Explanation:

To calculate the work done when lifting an object, you can use the formula:

Work = force x distance

In this case, the force is equal to the weight of the object, which can be calculated using the formula:

Force = mass x acceleration due to gravity

So, the work done is:

Work = (mass x acceleration due to gravity) x distance

Work = (25 kg x 9.8 m/s^2) x 3 m

Work = 735 J

Therefore, the correct answer is option a) 735 J.