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
Time taken to reach A to B for a projectile is 't'. Then the distance AB is equal to
$ a)\;\large\frac{ut}{\sqrt 3} \\ b)\;\large\frac{\sqrt 3 ut}{2}\\ c)\;\sqrt ut \\ d)\;2 ut$
jeemain
physics
class11
unit2
kinematics
motion-in-a-plane
projectile-motion
difficult
Share
asked
Jun 26, 2013
by
meena.p
recategorized
Aug 11, 2014
Please
log in
or
register
to add a comment.
Please
log in
or
register
to answer this question.
1 Answer
Horizontal component of u is $u \cos 60$
$=\large\frac{u}{2}$
$AC=\large\frac{u}{2}$$t=\large\frac{ut}{2}$
$AB=AC \sec 30$
$\qquad=\large\frac{ut}{2} \frac{2}{\sqrt 3}$
$\qquad=\large\frac{ut}{\sqrt 3}$
Hence a is the correct answer.
answered
Jun 26, 2013
by
meena.p
edited
Jan 25, 2014
by
meena.p
Please
log in
or
register
to add a comment.
Related questions
It is possible to project a particle with a given velocity in two possible ways so as to make it pass through a point at a horizontal distance R from the point of projection . If $t_1$ and $t_2$ are the time taken to reach this point in two possible ways then what is $t_1t_2$?
jeemain
physics
class11
ch4
kinematics
motion-in-a-plane
projectile-motion
medium
asked
Jul 15, 2014
by
meena.p
1
answer
A partical A is projected with an initial velocity of $60 m/s$ at an angle $30 ^{\circ}$ to horizontal . At the same time a second particle B is projected in the opposite direction with initial speed of $50 m/s$ from a point at a distance of $100 m$ from A. If the particle collide in mid air. find the angle of projection $\alpha$ of particle B.$(g=10 m/s^2)$
jeemain
physics
class11
unit2
kinematics
motion-in-a-plane
projectile-motion
difficult
asked
Jul 2, 2013
by
meena.p
1
answer
The trajectory of a projectile in a vertical plane is $y=ax-bx^2$ where $a$ and $b$ are constants. The maximum height attained by the particle and the angle of projection from horizontal are
jeemain
physics
class11
unit2
kinematics
motion-in-a-plane
projectile-motion
difficult
asked
Jul 1, 2013
by
meena.p
2
answers
A plane is flying horizontally at an attitude of 490 m with a velocity of 80 m/s. A bomb is dropped from it. After how much time does the bomb reach the ground ?
jeemain
physics
class11
unit2
kinematics
motion-in-a-plane
projectile-motion
easy
asked
Jun 21, 2013
by
meena.p
1
answer
At what departure angle should a body be projected so that the maximum vertical height attained by a projectile is equal to the horizontal range ?
jeemain
physics
class11
unit2
kinematics
motion-in-a-plane
projectile-motion
q5
medium
asked
Jun 20, 2013
by
meena.p
1
answer
The path followed by a body projected along y axis is given by $y=\sqrt 3 x-\large\frac{1}{2}$$ x^2$. If $g=10 m/s^2$ Then initial velocity of projectile is
jeemain
physics
class11
unit2
kinematics
motion-in-a-plane
projectile-motion
easy
asked
Jul 3, 2013
by
meena.p
1
answer
A projectile is given an initial velocity of $\hat i+2 \hat j$. The cartesian equation of its path is $(g=10 m/s^2)$. ($\hat i$ vector along horizontal $\hat j$ vector along vertically upward)
jeemain
physics
class11
unit2
kinematics
motion-in-a-plane
projectile-motion
medium
asked
Jul 1, 2013
by
meena.p
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
...