Kinematic Analysis
1. **State the problem:**
We have an object moving along the x-direction starting from rest and its distance traveled is recorded every second for 6 seconds. We want to analyze the motion using the given data and kinematic equations, then plot graphs for distance vs. time, distance vs. time squared, and acceleration vs. time.
2. **Given data:**
| Time (s) | 0 | 1 | 2 | 3 | 4 | 5 | 6 |
|----------------|---|---|---|---|---|---|---|
| Distance (m) | 0 | 3 | 12| 27| 48| 75|108|
| Time Squared (s^2)| 0 | 1 | 4 | 9 |16 |25 |36 |
| Acceleration (m/s^2)| 0| 0 | 6 | 6 | 6 | 6 | 6 |
| Velocity (m/s) | 0 | 6 |12 |18 |24 |30 |36 |
3. **Analyze the motion using kinematics:**
- Starts from rest: initial velocity $v_0=0$.
- Constant acceleration after $t>1$ second: $a=6$ $m/s^2$.
Using the formula for displacement under constant acceleration from rest:
$$s = \frac{1}{2}at^2$$
Check for $t\geq 1$:
- For example, at $t=2$:
$$s = \frac{1}{2} \times 6 \times 2^2 = 12 \text{ m}$$ which matches the table.
4. **Explain graphs:**
**a. Distance vs. Time:**
- Non-linear curve increasing faster as time progresses due to acceleration.
**b. Distance vs. Time Squared:**
- A straight line passing through origin since $s \propto t^2$.
**c. Acceleration vs. Time:**
- Zero at $t=0$ and $t=1$, then constant at 6 $m/s^2$ afterwards.
5. **Desmos graphs**
`distance vs time`:
$$y = 3t^2/2$$ for $t>1$ simplified from data (using given acceleration 6).
`distance vs time squared`:
$$y = 3x$$ where $x = t^2$
`acceleration vs time`:
$$y = 6$$ constant acceleration after 1 sec.