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Why the time taken is equal when any object is thrown upward and it moves back downward

Posted by Suraj Mandal 6 years, 2 months ago

CBSE > Class 11 > Physics

3 answers

Ayush Vishwakarma 6 years, 2 months ago

The time taken is equal when an object is thrown upward and its moves backward because the time taken by the object to move upward as the object move upward the speed of object decrease with time to time and reach the position where the speed is zero that position is called maximum height and due to gravitational force the object move backward towards the surface as increases its speed or velocity time to time. Here the common things is time which is equal to move upward and downward

Reyansh Singh 6 years, 2 months ago

By taking example yo will come know...

Reyansh Singh 6 years, 2 months ago

Because , time of flight = 2u/g (for complete journey) and for time taken to up divide it by 2. And time of flight can be solved by equation S=ut-1/2gt²(case of motion under gravity)

ANSWER

What is1 newton

Posted by Ronak Bhaskar 6 years, 2 months ago

CBSE > Class 11 > Physics

1 answers

Mausam Chahal 6 years, 2 months ago

If 1 m per second square acceleration is produced in a mass of 1 kg

ANSWER

Origin of friction?

Posted by Pratiksha Rai 6 years, 2 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

The position of a particle is given by R vector equal to 3tsquare i cap - 8 tj cap+10k cap .find angle between acceleration and velocity vector at t equal to 1s

Posted by Raji Raji 6 years, 2 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

A ball is throun from the top of tower of height 63.8 with velocity 30 m/s at an angle of 37° above the horizontal the angle formed by the velocity of stone with the horizontal when it hitsvthe ground is

Posted by Raji Raji 6 years, 2 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Find the stress of rod if it is allowed to expand by 1 millimetre

Posted by Yurreingam Yurreingam 6 years, 2 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

A ball is released from top of tower of height h metres . If it takes T sec to reach the groud then what will be the position of the ball in T / 3 sec from the ground

Posted by Mona Sharma ? 6 years, 2 months ago

CBSE > Class 11 > Physics

1 answers

Ranjeet Kumar 6 years, 2 months ago

h = (1/2)g T^2 => T = (2h/g)^1/2 at T = 0, u = 0 and at T/3 ,v = gT/3 s = ( v^2 - u^2)/2g = ((gT)^2)/18 g = h/9

ANSWER

A shell is fited at an angle of 30°of the horizontal with a velocity of 19.6 metre per sec.Find a) time of flight,b) horizontal range ,c) maximum height reached

Posted by Victorpaul Dokka 6 years, 2 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

In the standard equation Snth = u+a/2(2n-1) what is the dimenaions do you view for Snth

Posted by S Anandhika 6 years, 2 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

fill in the blanks by suitable conversion of units:- (1). 1m = ............ ly (2). 3.0 ms-2 = .........km h-2

Posted by Krishnapal Singh Charan 6 years, 2 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

two blocks of mass 3 kg and 2kg are in contact with each other on a frictionless table find the force exerted the smaller block on bigger block if a force of 5 newton is applied on the bigger block

Posted by Sam Sohal 6 years, 2 months ago

CBSE > Class 11 > Physics

1 answers

Reyansh Singh 6 years, 2 months ago

2 newton ...Sahi hai?

ANSWER

Parallaxes terome

Posted by Channappa Bannihatti 6 years, 2 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Distinguish between accuracy and precision

Posted by Priti Chandra Padhi 6 years, 2 months ago

CBSE > Class 11 > Physics

2 answers

Nitin Rana 6 years, 2 months ago

in simple language Accuracy; closness of result/value Precision; exact result/value

Yogita Ingle 6 years, 2 months ago

Accuracy	Precision
It could be defined as the level of correctness of a measurement to its true value.	It could be defined as the sharp exactness of a measurement.
Has one factor used for measuring.	Has multiple factors for measurement.
Accurate items have to be precise in most cases.	Precise items may or may not be accurate.

ANSWER

A spring is cut into two halves. What is spring constant on two halves affected

Posted by Neeraj Sharma 6 years, 2 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

What is principle of homogeneity?

Posted by Syeda Aisha 6 years, 2 months ago

CBSE > Class 11 > Physics

1 answers

Ramesh Chand 6 years, 2 months ago

The same type of quantities can be add or subtract

ANSWER

How much change will in kinetic energy if momentum is increased by 10 percent?

Posted by Syeda Aisha 6 years, 2 months ago

CBSE > Class 11 > Physics

1 answers

Yogita Ingle 6 years, 2 months ago

Let the initial mass of the body be m and its velocity be v.
Initial momentum of the body = mv
Initial KE = mv^2/2
If the momentum increases by 10%, new momentum = mv + 10% of mv
= mv + 10/100mv
= mv + mv/10
=11mv/10
=m(11v/10)
New velocity = 11v/10
Increase in velocity = v/10
New KE = m(11v/10)^2/2
= 121/100mv^2/2
Increase in KE = 21%

ANSWER

Sir can you kindly provide the important 5 mark questions from ncert textbook chapter 1 to 7

Posted by Vraj Patel 6 years, 2 months ago

CBSE > Class 11 > Physics

1 answers

Ktdbros Ktdbros 6 years, 2 months ago

1-1,4,7,5,9

ANSWER

What is gyration

Posted by Hritik Sharma 6 years, 2 months ago

CBSE > Class 11 > Physics

1 answers

Jigar Jat 6 years, 2 months ago

Gyration means that the distance where a entire body can be placed frome the axis so that its moment of inertia is same about given axis

ANSWER

my question paper not generate.

Posted by Naina Choukade 6 years, 2 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Use of elastic collision in nuclear reactors

Posted by Yameen Pawar 6 years, 2 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

Rain is falling vertically with a speed of 30 metre per second wind start doing after some time with a speed of 12 metre per second in East to West direction in which direction should a boy waiting at a bus stop hold his umbrella

Posted by Raj Singh 6 years, 2 months ago

CBSE > Class 11 > Physics

2 answers

Jigar Jat 6 years, 2 months ago

Tan^-1 (2\5)

Anjali Kumari??? 6 years, 2 months ago

Check answer in NCERT examples

ANSWER

equation for Boyle law

Posted by Inderjit Singh 6 years, 2 months ago

CBSE > Class 11 > Physics

1 answers

Nitin Patel 6 years, 2 months ago

P1V1=P2V2

ANSWER

Light year is the unit of

Posted by Mohd Naushad 6 years, 2 months ago

CBSE > Class 11 > Physics

2 answers

Annadurai Nanjundan 6 years, 2 months ago

Distance

Ronny Patel 6 years, 2 months ago

A light-year is a unit of distance. It is the distance that light can travel in one year. Light moves at a velocity of about 300,000 kilometers (km) each second. So in one year, it can travel abou

ANSWER

A car is moving along a straight road with a uniform acceleration. It passes through two points p and q separated by a distance with velocity 30km/h and 40km/h respectively. The velocity of the car midway p and q is...... (a) 33.3km/h (b) 20√2km/h (c) 25√2km/h (d) 35km/h

Posted by Kavya Singh Gaur 6 years, 2 months ago

CBSE > Class 11 > Physics

2 answers

Kavya Singh Gaur 6 years, 2 months ago

But answer 25√2 given h...

Ronny Patel 6 years, 2 months ago

20√2km/h

ANSWER

A thief jumps from roof of house with a box on his head what will be the weight of box as experiencd by thief during jump?

Posted by Muskann Tiwari 6 years, 2 months ago

CBSE > Class 11 > Physics

4 answers

Muskann Tiwari 6 years, 2 months ago

Thanx atharv

Atharv Jadhav 6 years, 2 months ago

Since the relative velocity of box and theif are same therefore the weight will be 0

Atharv Jadhav 6 years, 2 months ago

O

Vazha Tech 6 years, 2 months ago

Mg

ANSWER

Explain conservation of linear momentum by sutiable example

Posted by Haiderabbas Aghariya 6 years, 2 months ago

CBSE > Class 11 > Physics

2 answers

Yogita Ingle 6 years, 2 months ago

If the net external force acting on a system of bodies is zero, then the momentum of the system remains constant. This is the basic law of conservation of linear momentum.

1) When a bullet is fired from a gun, the recoil of the gun can be explained on the basis of the law of conservation of linear momentum.

2) When a heavy nucleus at rest disintegrates into two smaller nuclei, the products move in opposite directions, obeying the law of conservation of linear momentum.

3) The motion of rockets is obeyed by the law of conservation of linear momentum.

Muskann Tiwari 6 years, 2 months ago

Here initial momentum is equal to final momentum ex is recoiling of gun

ANSWER

When mass and energy equivalent and how derivat

Posted by Alok Maurya 6 years, 2 months ago

CBSE > Class 11 > Physics

0 answers

ANSWER

A point moves in a straight line under the retardation av^2, where a is positive constant and v is speed. If initial velocity is u, distance covered in t second is

Posted by Pranay Prasoon 6 years, 2 months ago

CBSE > Class 11 > Physics

1 answers

Gaurav Seth 6 years, 2 months ago

acceleration = -av^2. (We are assuming that a is a constant and v represents velocity here)

Now, acceleration = dv/dt

Hence, dv/dt = -av^2

dv/v^2 = -adt

Integrating from t = 0, v = u to t = t and v =v

[1/u-1/v] = -at

1/v = 1/u+ at

1/v = (1+uat)/u

v = u/(1+uat)

Now v = dx/dt

dx/dt = u/(1+uat)

dx = u/(1+uat) dt

Integrating from x = 0, t = 0 to x = x, t = t

x = u/ua * ln|1+uat|

x = ln|1+uat|/a

ANSWER

What is angular momentum unit

Posted by Himanshi Pareek 6 years, 2 months ago

CBSE > Class 11 > Physics

1 answers

Agamya Gupta 6 years, 2 months ago

Kg m2/sec

ANSWER

2i+aj+k, B= 4i-2j-2k find a

Posted by Sudeshna Panda 6 years, 2 months ago

CBSE > Class 11 > Physics

4 answers

Shruti Rai 6 years, 2 months ago

3

Mohd Naushad 6 years, 2 months ago

A perpendicular B equal to 0 A cross B . Value of a A --equal 3

Adarsh Kesharwani 6 years, 2 months ago

If thita is equal to 90°then a=3 But if thita is 0°then a=-3

Lokesh Mahto 6 years, 2 months ago

3

ANSWER

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