A weightlifter lifts a 100-kg weight 1.5 meters off the floor at a constant velocity. Which statement about this situation is true?(1 point)
Responses
The mechanical energy of the system increased because of friction.
The mechanical energy of the system increased because of friction.
The potential energy of the weight decreased as it was lifted up.
The potential energy of the weight decreased as it was lifted up.
The kinetic energy of the weight decreased as it was lifted up.
The kinetic energy of the weight decreased as it was lifted up.
The mechanical energy of the system decreased because of friction.
The mechanical energy of the system decreased because of friction.
1 answer
The correct statement is: The potential energy of the weight decreased as it was lifted up.
1 answer