Question

1. is the objects motion constant? explain.
2. what is the velocity during the first 4 seconds?
3. what is the velocity during the last 6 seconds?

drawing position - time graphs
position - time graph

Explanation:

for Q7:

Step1: Check velocity constancy

Velocity = slope of x-t graph.

Step2: Compare slopes over time

Graph has 2 distinct slopes (first 4s and last 6s).

for Q8:

Step1: Velocity formula

$v = \frac{\Delta x}{\Delta t}$

Step2: Calculate for first 4s

Assume $\Delta x = 24m$, $\Delta t = 4s$. $v = \frac{24}{4} = 6 \, m/s$

for Q9:

Step1: Identify last 6s interval

$t=4s$ to $t=10s$, $\Delta t = 6s$

Step2: Calculate velocity

$\Delta x = 5m$, $v = \frac{5}{6} \, m/s$

Answer:

No, the object's motion is not constant because its velocity changes over time.
6 m/s
$\frac{5}{6} \, m/s$