Download the App!
Get 24/7 study help with the Numerade app for iOS and Android! Enter your email for an invite.
Get the answer to your homework problem.
Try Numerade free for 7 days
Like
Report
A woman and her dog are out for a morning run to the river, which is located 4.0 $\mathrm{km}$ away. The woman runs at 2.5 $\mathrm{m} / \mathrm{s}$ in a straight line. The dog is unleashed and runs back and forth at 4.5 $\mathrm{m} / \mathrm{s}$ between his owner and the river, until the woman reaches the river. What is the total distance run by the dog?
$7.2 \times 10^{3} m$
Physics 101 Mechanics
Chapter 2
Kinematics in One Dimension
Motion Along a Straight Line
Simon Fraser University
University of Winnipeg
McMaster University
Lectures
04:34
In physics, kinematics is …
07:57
In mathematics, a position…
05:17
A dog in an open field run…
03:46
01:13
Two dogs, initially separa…
01:11
(II) A child, who is 45 $\…
01:30
An athlete crosses a 25-m-…
01:31
(II) A child, who is 45 m …
07:53
A woman starts walking fro…
02:52
(II) A swimmer is capable …
07:13
Brandon is on one side of …
02:43
Runner A is initially 4.0 …
05:44
A woman finds that the bea…
09:38
A woman can row a boat at …
01:02
A river has a current of $…
01:58
02:16
Velocity A woman walks due…
02:59
02:47
02:37
Odina and LaToya are sitti…
00:42
Distance Across River. Giv…
01:22
A cyclist rides $5.0 \math…
this problem. We know the constant speed of the woman which is 2.5 meters per second, and she's headed toward a river which is four kilometers away. We need to turn everything into the same unit. So we're gonna convert kilometers two meters knowing that there's 1000 meters in each kilometer. So our distance or displacement is 4000 meters, so that we have a dog that's traveling at a different speed for that whole time. But we need to calculate what that time is. So because distance is velocity, times time, we could rearrange that south up for tea. It would be the distance divided by the speed. The distance is 4000. That speed is 2.5 of the woman. So our time is 1600 seconds. So that whole time the dog is traveling at a constant speed of 4.5 litres per second. Now the dog is going back and forth, and so clearly would be accelerating and decelerating. But this is the average speed of the dog. So if the dog is traveling at the speed for or this average feed for that whole time period, the distance travelled by the dog would just be the velocity just 4.5 times that total time of 1600 circuits, so that would give us 7200 meters or back two kilometers, 7.2 kilometers.
View More Answers From This Book
Find Another Textbook
Numerade Educator
In physics, kinematics is the description of the motion of objects and syste…
In mathematics, a position is a point in space. The concept is abstracted fr…
05:15
Two newly discovered planets follow circular orbits around a star in a dista…
02:18
Vesna Vulovic survived the longest fall on record without a parachute when h…
04:02
A highway is to be built between two towns, one of which lies 35.0 $\mathrm{…
02:07
Consult Multiple-Concept Example 14 for background pertinent to this problem…
03:29
A 35-kg crate rests on a horizontal floor, and a 65-kg person is standing on…
03:05
Given the quantities $a=9.7 \mathrm{m}, b=4.2 \mathrm{s}, c=69 \mathrm{m} / …
03:48
The drawing shows a baggage carousel at an airport. Your suitcase has not sl…
06:59
SSM An airplane is flying with a velocity of 240 m/s at an angle of 30.0- w…
05:31
An 830-kg race car can drive around an unbanked turn at a maximum speed of 5…
05:39
(a) Two workers are trying to move a heavy crate. One pushes on the crate wi…
