1. use this table of a school bus during morning pickups to calculate its average speed between 0 h and…

Explanation:

Step1: Recall average - speed formula

The formula for average speed $v_{avg}=\frac{\Delta x}{\Delta t}$, where $\Delta x$ is the change in position and $\Delta t$ is the change in time.

Step2: Calculate $\Delta x$

$\Delta x=x_f - x_i$, with $x_i = 0.0$ km and $x_f=16.3$ km, so $\Delta x=16.3 - 0.0=16.3$ km.

Step3: Calculate $\Delta t$

$\Delta t=t_f - t_i$, with $t_i = 0.000$ h and $t_f = 2.340$ h, so $\Delta t=2.340 - 0.000 = 2.340$ h.

Step4: Calculate average speed

$v_{avg}=\frac{\Delta x}{\Delta t}=\frac{16.3}{2.340}\approx6.97$ km/h.

For the second - question:

Brief Explanations:

According to Newton's first law of motion, an object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force. So, an unbalanced force is required to make an object at rest move.

Answer:

1. $6.97$ km/h
2. An unbalanced force