Question

Consider the following situations:
(a) A car is moving along a straight road at a constant speed.
(b) A car is moving along a straight road while slowing down.
(c) A car is moving along a straight road while speeding up.
(d) A hockey puck slides along a horizontal icy (frictionless) surface.
(e) A hockey puck slides along a rough concrete surface.
(f) A cockroach is speeding up from rest.
(g) A rock is thrown horizontally; air resistance is negligible.
(h) A rock is thrown horizontally; air resistance is substantial.
(i) A rock is dropped vertically; air resistance is negligible.
(j) A rock is dropped vertically; air resistance is substantial.

Which of these situations describe the motion shown in the motion diagram at point A?