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Maitreyie Tomar
Subject: Science
, asked on 31/1/18
Explain
the mathematical formulation of second law of motion
?
Answer
1
Vagmi
Subject: Science
, asked on 30/1/18
What is the true for force F and component of force in the direction of displacement F' ? F>F' F>=F' F=F'
Answer
1
Aditya Kumar
Subject: Science
, asked on 30/1/18
ans plz
Answer
4
Mohd Anas Khan
Subject: Science
, asked on 28/1/18
Ques. How can the first law of motion be mathematically started from the second law of motion.
Answer
2
Fatima Nadeem
Subject: Science
, asked on 28/1/18
Q. Two train P and Q are running in the same direction on parallel track such that P is faster than Q. If packets of equal weights are exchanged between them , then
(a) P will be accelerated but Q will be retarded
(b) P will be retarded but Q will be accelerated
(c) There will be no change in velocity of P, but Q will be retarded
(d) There will be no change in velocity of P, but Q will be accelerated
Answer
1
Shreya Bharti
Subject: Science
, asked on 20/1/18
please ans fast step by step
$Twocars\mathit{A}and\mathit{B}aretravellinginthesamedirectionwithvelocities{v}_{1}and{v}_{2}({v}_{1}{v}_{2}).Whenthecar\mathbf{}\mathit{B}isatadis\mathrm{tan}cedaheadofthecar\mathit{A},thedriverofthecar\mathit{A}appliedthebrakeproducingauniformretardation\mathit{a}\mathbf{}Therewillbenocollisionwhen\phantom{\rule{0ex}{0ex}}\phantom{\rule{0ex}{0ex}}\left(a\right)d\frac{{\left({v}_{1}-{v}_{2}\right)}^{2}}{2a}\left(b\right)d\frac{{v}_{{}_{1}}^{2}-{v}_{{}_{2}}^{2}}{2a}\left(c\right)d\frac{{\left({v}_{1}-{v}_{2}\right)}^{2}}{2a}\left(d\right)d\frac{{v}_{{}_{1}}^{2}-{v}_{{}_{2}}^{2}}{2a}$
Answer
1
Shreya Bharti
Subject: Science
, asked on 20/1/18
Two blocks are connected by a string as shown in the diagram. The upper block is hung by another string. A force F applied on the upper string produces an acceleration of 2 m/s
^{2}
^{ }
in the upward direction in both the blocks. If T and T' be the tensions in the two parts of the string, then
(a) T = 70.8N and T' = 47.2 N (b) T = 58.8 N and T' = 47.2 N
(c) T = 70.8 N and T' = 58.8 N (d) T = 58.8 N and T' = 58.8 N
Answer
1
Arjun Pal
Subject: Science
, asked on 19/1/18
Solve this:
Answer
2
Shreya Bharti
Subject: Science
, asked on 16/1/18
Derive newtons first second and third law of motion
Answer
1
Shreya Bharti
Subject: Science
, asked on 16/1/18
Derive Newtons First and Third law.of motion by second law of motion
Answer
1
Devhuti
Subject: Science
, asked on 16/1/18
A) Do all bodies immersed in a given fluid experience the same buoyant force ?Explain.
B) A 100cm cube block has a mass of 395gm find its relative density. (Density of water = 1gm/cm
^{3 )}
Answer
1
Devhuti
Subject: Science
, asked on 16/1/18
i)which would require a greater force accelerating a 2 kg mass at 5m/s
^{2}
^{}
or a 4 kg
mass
at 2m/s
^{2 ? ii) write SI unit of force }
Answer
3
Devhuti
Subject: Science
, asked on 16/1/18
plot velocity time graph for a body whose initial velocity is 5 m/s and is moving with a retardation of m/s
^{2}
also calculate the distance covered by it.
Answer
1
Devhuti
Subject: Science
, asked on 16/1/18
a train 100 m long is moving with a constant velocity of 60 kmh-1 find the time it takes to cross the bridge 1 km long
^{ }
Answer
1
Devhuti
Subject: Science
, asked on 16/1/18
a body of mass 1000 kg moving at a speed of 10 m/s reaches the speed of 50 m/s in 20s calculate the force required to do so.
Answer
3
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What are you looking for?

(a) P will be accelerated but Q will be retarded

(b) P will be retarded but Q will be accelerated

(c) There will be no change in velocity of P, but Q will be retarded

(d) There will be no change in velocity of P, but Q will be accelerated

$Twocars\mathit{A}and\mathit{B}aretravellinginthesamedirectionwithvelocities{v}_{1}and{v}_{2}({v}_{1}{v}_{2}).Whenthecar\mathbf{}\mathit{B}isatadis\mathrm{tan}cedaheadofthecar\mathit{A},thedriverofthecar\mathit{A}appliedthebrakeproducingauniformretardation\mathit{a}\mathbf{}Therewillbenocollisionwhen\phantom{\rule{0ex}{0ex}}\phantom{\rule{0ex}{0ex}}\left(a\right)d\frac{{\left({v}_{1}-{v}_{2}\right)}^{2}}{2a}\left(b\right)d\frac{{v}_{{}_{1}}^{2}-{v}_{{}_{2}}^{2}}{2a}\left(c\right)d\frac{{\left({v}_{1}-{v}_{2}\right)}^{2}}{2a}\left(d\right)d\frac{{v}_{{}_{1}}^{2}-{v}_{{}_{2}}^{2}}{2a}$

^{2}^{ }in the upward direction in both the blocks. If T and T' be the tensions in the two parts of the string, then(a) T = 70.8N and T' = 47.2 N (b) T = 58.8 N and T' = 47.2 N

(c) T = 70.8 N and T' = 58.8 N (d) T = 58.8 N and T' = 58.8 N

B) A 100cm cube block has a mass of 395gm find its relative density. (Density of water = 1gm/cm

^{3 )}^{2}^{}or a 4 kgmassat 2m/s^{2 ? ii) write SI unit of force }^{2}also calculate the distance covered by it.^{ }