☰
Is Matter Around Us Pure
Explain how Newton’s first law of motion is a special case of second law?
According to Newton’s second law,
F = ma
Since, mass of a body cannot be zero therefore, when when force is equal to zero, acceleration is also zero. So, there wont be any change in the velocity of the body.
So, in the absence of any external force, a body will continue to remain in its state of rest or of uniform motion in a straight line. This is Newton’s first law of motion.
So, Newton’s first law of motion is contained in the second law.
Sponsor Area
Which separation techniques will you apply for the separation of the following?
Small pieces of metal in the engine oil of a car.
Which separation techniques will you apply for the separation of the following?
Different pigments from an extract of flower petals.
Which separation techniques will you apply for the separation of the following?
Butter from curd.
Write the steps you would use for making tea. Use the words—solution, solvent, solute, dissolve, soluble, insoluble, filtrate and residue.
Pragya tested the solubility of three different substances at different temperatures and collected the data as given below (results are given in the following table, as grams of substance dissolved in 100 grams of water to form a saturated solution).
|
Substance Dissolved |
Temperature in K |
||||
|
283 |
293 |
313 |
333 |
353 |
|
|
Potassium nitrate |
21 |
32 |
62 |
106 |
107 |
|
Sodium chloride |
36 |
36 |
36 |
37 |
37 |
|
Potassium chloride |
35 |
35 |
40 |
46 |
54 |
|
Ammonium chloride |
24 |
37 |
41 |
55 |
66 |
Sponsor Area
Sponsor Area