|
Find the direction for an umbrella when rain falls vertically with speed 20 m and wind blows from east to west with a speed of 15 m
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0
|
1597
|
August 17, 2016
|
|
Prove that the maximum horizontal range is four times the maximum height attained by the projectile, when fired at an inclination so as to have maximum horizontal range
|
|
0
|
13944
|
August 17, 2016
|
|
Rain is falling vertically with a speed of 30 m. A woman rides a bicycle with a speed of 10 m in the north to south direction. What is the direction in which she should hold her umbrella?
|
|
0
|
4966
|
August 17, 2016
|
|
A body in uniform horizontal circular motion possess variable velocity. Does it mean that the kinetic energy of the body is also variable?
|
|
0
|
1487
|
August 17, 2016
|
|
Name the quantity which remains unchanged during the flight of an oblique projectile
|
|
0
|
4834
|
August 17, 2016
|
|
What furnishes the centripetal acceleration for the earth to go round the sun?
|
|
0
|
1700
|
August 17, 2016
|
|
Is the maximum height attained by projectile is largest when its horizontal range is maximum?
|
|
0
|
4752
|
August 17, 2016
|
|
A projectile is fixed at an angle of 15° to the horizontal with the speed v
|
|
1
|
626
|
August 17, 2016
|
|
A bullet is dropped from a certain height and at the same time, another bullet is fired horizontally from the same height which one will hit the ground earlier and why?
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|
0
|
3116
|
August 17, 2016
|
|
If both the speed and radius of the circular path of a body are doubled, how will the centripetal acceleration change?
|
|
0
|
5519
|
August 17, 2016
|
|
What is the angle between velocity vector and acceleration vector in uniform circular motion?
|
|
0
|
2688
|
August 17, 2016
|
|
The velocity of a particle is constant in magnitude but not in direction. What is the nature of trajectory?
|
|
0
|
1816
|
August 17, 2016
|
|
Why does a tennis ball bounce higher on hills than in plains?
|
|
0
|
1527
|
August 17, 2016
|
|
Why a projectile fixed along the horizontal not follow a straight line path?
|
|
0
|
2541
|
August 17, 2016
|
|
Is the rocket in flight is an example of projectile?
|
|
0
|
3867
|
August 17, 2016
|
|
Is it possible that the brakes of a car are so perfect that the car stops instantaneously. If no, why?
|
|
0
|
3445
|
August 17, 2016
|
|
Can we use the equations of kinematics to find the height attained by a body projected upwards with any velocity?
|
|
0
|
2306
|
August 17, 2016
|
|
Express cross product of two vectors in cartesian co-ordinate
|
|
0
|
4302
|
August 17, 2016
|
|
What do you understand by rectangular resolution of a vector ? Resolve it into its two rectangular components
|
|
0
|
5358
|
August 17, 2016
|
|
Define null vector. What are its properties ? What is its physical significance?
|
|
0
|
19360
|
August 17, 2016
|
|
State and prove parallelogram law of vector addition.Discuss some special cases
|
|
0
|
33328
|
August 17, 2016
|
|
Discuss the problem of a swimmer who want to cross the river in the shortest time
|
|
0
|
3602
|
August 17, 2016
|
|
In a harbour, wind is blowing at the speed of 72 km and the flag on the mast of a boat anchored in the harbour flutters along N-E direction
|
|
1
|
10666
|
August 17, 2016
|
|
Read each statement below carefully and state, with reasons, if it is true or false:
|
|
1
|
1592
|
August 17, 2016
|
|
Three girls skating on a circular ice ground of radius 200 m start from a point P on the edge of the ground and reach a point Q diametrically opposite to P following different paths as shown in Figure,
|
|
1
|
1274
|
August 17, 2016
|
|
State with reasons, whether the following algebraic operations with scalar and vector physical quantities are meaningful:
|
|
1
|
1980
|
August 17, 2016
|
|
Give an analytical method to find the vector sum of three vectors P, Q and R
|
|
0
|
2481
|
August 17, 2016
|
|
Find the magnitude and directions of the vectors
|
|
0
|
845
|
August 17, 2016
|
|
Find resultant vector of the summation of two vectors A and B having D between them
|
|
0
|
3888
|
August 17, 2016
|
|
The position vector of a particle is given by
|
|
1
|
2015
|
August 17, 2016
|