Question

tina and her puppy are tugging on a rope, each pulling on opposite ends. when is tina doing work? the entire time she plays with the puppy whenever she pulls the puppy toward her when she holds the rope steady as the puppy pulls it when she lets go of the rope and the puppy pulls it away

Explanation:

In physics, work is done when a force causes an object to move in the direction of the force. When Tina pulls the puppy toward her, she applies a force and causes the puppy (and the rope) to move in the direction of her force. When she holds the rope steady, there is no displacement in the direction of the force she is applying, so no work is done. When she lets go, she is no longer applying a force. Playing without causing displacement also means no work is done.

Answer:

B. whenever she pulls the puppy toward her