Solved Motion Graphs & Kinematics Worksheet: You must show | Chegg.com - Free Printable

Looking at the graph:

This is a velocity vs. time graph (V on y-axis, time in seconds on x-axis). The question asks for sections where the fly moves with constant velocity.

Constant velocity means the velocity does not change — so on a velocity-time graph, that’s represented by a horizontal line (slope = 0).

Let’s go section by section:

- From t=0 to t=2: Velocity goes from 0 to -8 m/s → changing → NOT constant.
- From t=2 to t=6: Velocity stays at -8 m/s → horizontal line → CONSTANT VELOCITY.
- From t=6 to t=7: Velocity jumps from -8 to +10 → changing → NOT constant.
- From t=7 to t=15: Velocity slowly increases from 10 to 14 → sloping up → NOT constant.
- From t=15 to t=18: Velocity drops from 14 to 0 → sloping down → NOT constant.
- From t=18 to t=19: Velocity drops further to -5 → still changing → NOT constant.
- From t=19 to t=22: Velocity rises back to 0 and stays flat? Wait — looking closely, from t=20 to t=22, it looks like it's flat at 0? Actually, let me check again.

Wait — re-examining the graph carefully:

Actually, between t=2 and t=6, the line is perfectly horizontal at V = -8 m/s → that’s one section.

Then, from t=19 to t=22? Let’s see: At t=19, V=-5; then it goes up to 0 at t=20, and then... from t=20 to t=22, it appears to be flat at V=0? But wait — the problem says “identify section(s)” — plural possible.

But actually, looking more precisely:

From t=2 to t=6: horizontal at -8 → constant velocity.

Is there any other?

At the very end, from t=20 to t=22, if it’s flat at 0, that would also be constant velocity (zero velocity).

But let’s confirm the grid.

The x-axis: each major grid line is 5 seconds? No — labels are at 5, 10, 15, 20 — but between them, there are smaller grids. Looks like each small square is 1 second.

So:

- t=2 to t=6: 4 seconds long, flat at -8 → constant.

- Then after t=19: at t=19, V=-5; t=20, V=0; then from t=20 to t=22, it seems to stay at 0? Yes — the line is horizontal from t=20 to t=22 at V=0.

So two sections:

1. t = 2 s to t = 6 s → velocity = -8 m/s (constant)

2. t = 20 s to t = 22 s → velocity = 0 m/s (also constant — just not moving)

Note: Constant velocity includes zero velocity — because acceleration is zero.

So both qualify.

Final Answer:
The fly moves with constant velocity during the time intervals from 2 seconds to 6 seconds and from 20 seconds to 22 seconds.