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<meta name="description" content="A bus is driving along a straight highway at constant speed v. You have noticed the bus when it was at some point A. From what area near the highway can you catch up with this bus if your running speed is u < v? Draw this area for u = v/2. For problem 1.1.10^*">
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<meta property="og:description" content="A bus is driving along a straight highway at constant speed v. You have noticed the bus when it was at some point A. From what area near the highway can you catch up with this bus if your running speed is u < v? Draw this area for u = v/2. For problem 1.1.10^*">
<title>A bus is driving along a straight highway at constant speed v. You have noticed the bus when it was at some point A. From what area near the highway can you catch up with this bus if your running speed is u < v? Draw this area for u = v/2. For problem 1.1.10^*</title>
$1.1.10^*.$ A bus is driving along a straight highway at constant speed $v$. You have noticed the bus when it was at some point $A$. From what area near the highway can you catch up with this bus if your running speed is $u < v$? Draw this area for $u = v/2$.
<center>
<figure>
<img src="statement.png"
loading="lazy" width="230" />
<figcaption>
For problem $1.1.10^*$
</figcaption>
</figure>
</center>
</p>
<h3>Solution</h3>
<p>
<center>
<figure>
<img src="1.1.10.png" alt="1.1.10"
loading="lazy" width="200" />
<figcaption>
Chasing a bus
</figcaption>
</figure>
</center>
<p>
1. Let the bus is at point $A$, and the catching up person starts from point $B$ and runs perpendicular to the roadway $AC$. Let us introduce the notations: $AC = L, BC = h, AB = s.$
</p>
<center>
<figure>
<img src="sol.png" alt="1.1.10"
loading="lazy" width="200" />
<figcaption>
The plane bounded by $\alpha$
</figcaption>
</figure>
</center>
<p>
2. From right-angled triangle $ABC$ we have
</p>
<p style="text-align: center;">
$$L = s \cdot cos \frac{\alpha}{2}\text{ и }h = s \cdot sin \frac{\alpha}{2}$$
</p>
<p>
3. Travel time of bus $t_1$ and passenger $t_2$ before meeting at point $C$
<small>All rights belong to the authors. <br> Commercial use of materials - with the written permission of the authors. <br> astrosander01@gmail.com <br></small>
<meta name="keywords" content="Savchenko Problems in Physics, Savchenko solutions, physics problems, physics olympiad preparation, IPhO, Jaan Kalda">
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<meta name="description" content="The largest dataset of solutions of 'Savchenko. Problems in Physics'. Savchenko’s Problems in General Physics is widely used to prepare for olympiads and it is a useful tool to
<meta name="description" content="A bus is driving along a straight highway at constant speed v. You have noticed the bus when it was at some point A. From what area near the highway can you catch up with this bus if your running speed is u < v? Draw this area for u = v/2. For problem 1.1.10^*">
master and sharpen your skills and techniques in comptetitive problem solving. Some of these problems were a source
of inspiration for Jaan Kalda’s handouts and to some NBPhO problems. You may find problems from old IPhO
<meta property="og:title" content="A bus is driving along a straight highway at constant speed v. You have noticed the bus when it was at some point A. From what area near the highway can you catch up with this bus if your running speed is u < v? Draw this area for u = v/2. For problem 1.1.10^*">
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<meta property="og:description" content="A bus is driving along a straight highway at constant speed v. You have noticed the bus when it was at some point A. From what area near the highway can you catch up with this bus if your running speed is u < v? Draw this area for u = v/2. For problem 1.1.10^*">
<title>A bus is driving along a straight highway at constant speed v. You have noticed the bus when it was at some point A. From what area near the highway can you catch up with this bus if your running speed is u < v? Draw this area for u = v/2. For problem 1.1.10^*</title>
$1.1.10^*.$ A bus is driving along a straight highway at constant speed $v$. You have noticed the bus when it was at some point $A$. From what area near the highway can you catch up with this bus if your running speed is $u < v$? Draw this area for $u = v/2$.
$1.1.10^*.$ A bus is driving along a straight highway at constant speed $v$. You have noticed the bus when it was at some point $A$. From what area near the highway can you catch up with this bus if your running speed is $u < v$? Draw this area for $u = v/2$.
<center>
<center>
<figure>
<figure>
<img src="statement.png"
<img src="statement.png"
loading="lazy" width="230" />
loading="lazy" width="230" />
<figcaption>
<figcaption>
For problem $1.1.10^*$
For problem $1.1.10^*$
</figcaption>
</figcaption>
</figure>
</figure>
</center>
</center>
</p>
</p>
<h3>Solution</h3>
<h3>Solution</h3>
<p>
<p>
<center>
<center>
<figure>
<figure>
<img src="1.1.10.png" alt="1.1.10"
<img src="1.1.10.png" alt="1.1.10"
loading="lazy" width="200" />
loading="lazy" width="200" />
<figcaption>
<figcaption>
Chasing a bus
Chasing a bus
</figcaption>
</figcaption>
</figure>
</figure>
</center>
</center>
<p>
<p>
1. Let the bus is at point $A$, and the catching up person starts from point $B$ and runs perpendicular to the roadway $AC$. Let us introduce the notations: $AC = L, BC = h, AB = s.$
1. Let the bus is at point $A$, and the catching up person starts from point $B$ and runs perpendicular to the roadway $AC$. Let us introduce the notations: $AC = L, BC = h, AB = s.$
</p>
</p>
<center>
<center>
<figure>
<figure>
<img src="sol.png" alt="1.1.10"
<img src="sol.png" alt="1.1.10"
loading="lazy" width="200" />
loading="lazy" width="200" />
<figcaption>
<figcaption>
The plane bounded by $\alpha$
The plane bounded by $\alpha$
</figcaption>
</figcaption>
</figure>
</figure>
</center>
</center>
<p>
<p>
2. From right-angled triangle $ABC$ we have
2. From right-angled triangle $ABC$ we have
</p>
</p>
<p style="text-align: center;">
<p style="text-align: center;">
$$L = s \cdot cos \frac{\alpha}{2}\text{ и }h = s \cdot sin \frac{\alpha}{2}$$
$$L = s \cdot cos \frac{\alpha}{2}\text{ и }h = s \cdot sin \frac{\alpha}{2}$$
</p>
</p>
<p>
<p>
3. Travel time of bus $t_1$ and passenger $t_2$ before meeting at point $C$
3. Travel time of bus $t_1$ and passenger $t_2$ before meeting at point $C$
<small>All rights belong to the authors. <br> Commercial use of materials - with the written permission of the authors. <br> astrosander01@gmail.com <br></small>
<small>All rights belong to the authors. <br> Commercial use of materials - with the written permission of the authors. <br> astrosander01@gmail.com <br></small>
