Subject: Science, asked on 31/1/18

## Explain ​ the mathematical formulation of second law of motion ?

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'

Subject: Science, asked on 30/1/18

## ans plz

Subject: Science, asked on 28/1/18

## Ques. How can the first law of motion be mathematically started from the second law of motion.

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

Subject: Science, asked on 20/1/18

## please ans fast step by step

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/s2 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

Subject: Science, asked on 19/1/18

## Solve this:

Subject: Science, asked on 16/1/18

## Derive newtons first second and third law of motion

Subject: Science, asked on 16/1/18

## Derive Newtons First and Third law.of motion by second law of motion

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/cm3 )

Subject: Science, asked on 16/1/18

## i)which would require a greater force accelerating a 2 kg mass at 5m/s2 or a 4 kg mass at 2m/s2         ? ii) write  SI unit of  force

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/s2 also calculate the distance covered by it.

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

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.

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