At one instant, an object is moving straight up at 80 meters per second. Four seconds later, its speed should be about
O 100 m/s.
O 50 m/s.
O 90 m/s.
O 60 m/s.
O 40 m/s.

are there answer choices to this question? this seems like a question where you have options to choose from.

this could be newton#'s law of cooling. the cooling curve is exponential

if the person is shown to have +90n, then ans is -10n.

if the person is shown to have -90n, then ans is +10n.