A weightlifter is trying to carry a 10 kg weight held over his head across the room. How much energy will be required to do this work on the 10 kg weight?

0 J

To calculate the energy required to do work on an object, we can use the equation:

Energy = Work

Work is defined as the amount of force applied to an object multiplied by the distance over which the force is applied. In this case, the weightlifter is carrying the weight over a certain distance, so we need to determine the force and multiply it by the distance traveled.

First, we need to determine the force. In this case, the force can be found by multiplying the mass of the weight (10 kg) by the acceleration due to gravity (9.8 m/s^2):

Force = mass * acceleration due to gravity
Force = 10 kg * 9.8 m/s^2
Force = 98 Newtons (N)

Now, let's assume the weightlifter carries the weight across the room for a distance of 5 meters. We can now calculate the work done on the weight:

Work = force * distance
Work = 98 N * 5 m
Work = 490 Joules (J)

Therefore, the energy required to do work on the 10 kg weight is 490 J.