A 165 lb researcher received a shipment of lab equipment in a 1600 N crate. She pushes it across the floor applying a 115 N force with her hands. Which of the following is true?
A) She always feels a 115 N force from the crate pushing back against her hands.
B) The crate will push back at her with a force of 165 lb.
C) She will feel a 1600 N force from the crate pushing back at her.
D) Only if the crate does not move will she feel a force of 115 N.
E) She will feel it pushing back at her with less than 115 N, if the crate is moving forward.
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