info@clay6.com
+91-9566306857
Ask Questions, Get Answers
Menu
X
JEEMAIN Crash Practice
15 Test Series
NEET Crash Practice
15 Test Series
CBSE XII
Math
JEEMAIN
Math
Physics
Chemistry
Practice Test Series
CBSE XI
Math
NEET
Physics
Chemistry
Biology - XII
Biology - XI
Olympiad class V
Math - 5 Test Series
Olympiad class VI
Math - 5 Test Series
CBSE XII Board Exam Series
BES Math
BES Physics
BES Chemistry
BES Biology
studyplans
JEEMAIN Crash Practice
15 Test Series
NEET Crash Practice
15 Test Series
CBSE XII
Math
JEEMAIN
Math
Physics
Chemistry
Practice Test Series
CBSE XI
Math
NEET
Physics
Chemistry
Biology - XII
Biology - XI
Olympiad class V
Math - 5 Test Series
Olympiad class VI
Math - 5 Test Series
CBSE XII Board Exam Series
BES Math
BES Physics
BES Chemistry
BES Biology
mobile
exams
ask
sample papers
tutors
pricing
login
X
ASK
Home
>>
JEEMAIN and NEET
>>
Physics
>>
Class11
>>
Motion in a Plane
A man travels 1 km east , then 5 km due south , then 2 km due east and finally 9 km due north. How far is he from the starting point ?
$\begin{array}{1 1}(A)\;3\;km \\(B)\;5\;km \\(C)\;4\;km\\(D)\;6\;km \end{array} $
jeemain
physics
class11
ch4
kinematics
motion-in-a-plane
scalars-and-vectors
vectors
Share
asked
Jul 16, 2014
by
meena.p
retagged
Aug 13, 2014
by
balaji.thirumalai
Please
log in
or
register
to add a comment.
Please
log in
or
register
to answer this question.
1 Answer
$ \overrightarrow {S}= \overrightarrow{S_1}+\overrightarrow{S_2}+\overrightarrow{S_3}+\overrightarrow{S_4}$
$\qquad=(i) +(-5j) +(2i) +(9j) $
$\qquad= 3i+4j$
$| \overrightarrow {S}|=\sqrt {(3)^2 +(4)^2}= 5 km$
Hence B is the correct answer.
answered
Jul 16, 2014
by
meena.p
Please
log in
or
register
to add a comment.
Related questions
An aircraf flies a $400 km/hr$ in still air. A wind of $200 \sqrt 2 km/hr$ is blowing from south. A pilot wishes to travel from A to a point B north east of A .Find the direction he must steer and time of journey if $AB=1000km$
jeemain
physics
class11
ch4
kinematics
motion-in-a-plane
vectors
scalars-and-vectors
difficult
asked
Jul 4, 2013
by
meena.p
1
answer
A river is flowing with speed of 1km/hr.A swimmer wants to go to point C starting from point A. He swims with a speed of 5 km/hr at an angle $\theta$with respect to the river. If $AB=BC=400m$ Then
jeemain
physics
class11
ch4
kinematics
motion-in-a-plane
scalars-and-vectors
vectors
medium
asked
Jun 28, 2013
by
meena.p
1
answer
A car travels east at a speed of $30m/s^{-1}$ . It turns left through an angle of $90^{\circ}$ and continues to travel with the same speed. What is the change in its velocity ?
jeemain
physics
class11
ch4
kinematics
motion-in-a-plane
scalars-and-vectors
vectors
motion-in-a-plane-with-constant-acceleration
difficult
asked
Jul 15, 2014
by
meena.p
1
answer
A man crosses the river in shortest time at an angle $\theta=60 ^{\circ}$ to the direction of flow of water. If the speed of water is $v_w=4\; km/hr$ find the speed of man.
jeemain
physics
class11
ch4
kinematics
motion-in-a-plane
vectors
scalars-and-vectors
medium
asked
Jun 20, 2013
by
meena.p
1
answer
A jet plane takes off with a velocity of 300 km/s at a bearing of 60$^{\circ}$. A wind with a velocity of 80 km/s NW blows it off course. What is the resultant velocity of the jet plane (magnitude and the bearing)?
jeemain
physics
class11
ch4
kinematics
motion-in-a-plane
scalars-and-vectors
vectors
medium
asked
Aug 11, 2014
by
balaji.thirumalai
1
answer
You start from a point and your first move is 5 m at an angle of 53.1$^{\circ}$. Your second move was 6 m along the x-axis and some unknown distance along the y-axis. Your third move was some unknown distance along the x-axis and -3 m along the y-axis. If you ended up at a point 5.39 m from where you started and 21.8$^{\circ}$ below the x-axis, calculate the unknown components of your second ($y_2$) and third ($x_3$) moves .
jeemain
physics
class11
ch4
kinematics
motion-in-a-plane
scalars-and-vectors
vectors
medium
asked
Aug 11, 2014
by
balaji.thirumalai
1
answer
A car travels 20 km due north and then 35 km in a direction 60$^{\circ}$ west of north as shown below. Find the magnitude and direction of the carâ€™s resultant displacement.
jeemain
physics
class11
ch4
kinematics
motion-in-a-plane
vectors
easy
asked
Aug 11, 2014
by
balaji.thirumalai
1
answer
Ask Question
Tag:
Math
Phy
Chem
Bio
Other
SUBMIT QUESTION
►
Please Wait
Take Test
JEEMAIN Crash Practice
15 Test Series
NEET Crash Practice
15 Test Series
JEEMAIN
350+ TESTS
NEET
320+ TESTS
CBSE XI MATH
50+ TESTS
CBSE XII MATH
80+ TESTS
...