Question

1. use this table of a school bus during morning pickups to calculate its average speed between 0 h and 2.340 h.

position (km) time (h)
0.0 0.000
1.2 0.024
2.8 0.051
4.2 0.084
16.3 2.340
type your answer here:

1. according to newtons first law of motion, what is required to make an object at rest move?

type your answer here:

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:

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