Finish Fig. 2.1 by indicating for each listed quantity whether it is a vector or a scalar.
A ball is dropped vertically through air from rest. Fig. 2.2 shows how the distance $d$ travelled by the ball varies with time $t$.
Using Fig. 2.2, explain how it may be inferred that the ball is initially at rest.
Using Fig. 2.2, explain how it may be inferred that air resistance is not negligible.
From Fig. 2.2, determine the speed of the ball at $0.40\,\text{s}$ after release.
On Fig. 2.2, sketch a graph to show how the distance $d$ travelled by the ball varies with time $t$ if air resistance is negligible. No further calculations are needed.
Using Fig. 2.2, explain how it may be inferred that the ball is initially at rest.
Using Fig. 2.2, explain how it may be inferred that air resistance is not negligible.
Use Fig. 2.2 to determine the speed of the ball at $0.40\,\text{s}$ after release.
On Fig. 2.2, sketch a graph to show how the distance $d$ travelled by the ball varies with time $t$ for negligible air resistance. No further calculations are required.