1) An apple is thrown straight up

1) An apple is thrown straight up. Compare the sign of the work done by gravity while the apple goes up with the sign of the work done by gravity while it goes down. A. Negative on the way up and negative on the way down B. Positive on the way up and positive on the way down C. Positive on the way up and negative on the way down D. Negative on the way up and positive on the way down 2. What represents the work done by the Force F on a force (F) versus displacement (d) graph? A. a line connecting two points on the curve B. The slope of the curve C. The length of the curve D. The area under the curve 3. For an ideal elastic spring, what does slope of the curve represent for a displacement (x) versus applied force (F) graph? A. The acceleration of gravity B. The square root of the spring constant C. The reciprocal of the spring constant D. The square of the spring constant