Question

question 11 (1 point)
the slope of a position-time graph represents
displacement
speed
velocity
acceleration
distance
question 12 (1 point)
ignoring air resistance, which of the following are exhibiting \free fall\?
an object, initially at rest, dropped out of a window
an object thrown vertically downward from a window
an object projected vertically upward from a window
an object thrown horizontally from a window
all of the above

Explanation:

For Question 11: The slope of a position-time graph is calculated as the change in position (displacement) divided by change in time, which is the definition of velocity (a vector quantity that includes direction, matching the sign of the slope).
For Question 12: Free fall is defined as motion where gravity is the only acting force (air resistance ignored). All listed objects have only gravity acting on them once released, regardless of their initial direction or rest state.

Answer:

Question 11: velocity
Question 12: all of the above