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MCQs & Quizzes relation to Law of Motion in Mechanics Physics
The first law of motion supplies the definition of______.
|
Option 1
|
Acceleration |
|
Option 2
|
Momentum |
|
Option 3
|
Force |
|
Option 4
|
Velocity |
When a body is accelerated
|
Option 1
|
Its speed always changes |
|
Option 2
|
It falls towards the earth |
|
Option 3
|
Its velocity always changes |
|
Option 4
|
Its direction always changes |
If a car is to gain momentum, it must
|
Option 1
|
Move rapidly |
|
Option 2
|
Lose weight |
|
Option 3
|
Lose inertia |
|
Option 4
|
Accelerate |
Which of the following are vector quantities
|
Option 1
|
Acceleration & Force |
|
Option 2
|
Density |
|
Option 3
|
Density & Energy |
|
Option 4
|
Energy & Force |
Which of the following is not necessary for work to be done
|
Option 1
|
A constant speed |
|
Option 2
|
A displacement |
|
Option 3
|
A force component along the displacement |
|
Option 4
|
Applied force |
The minimum number of unequal forces whose vector sum can equal to zero is
|
Option 1
|
0 |
|
Option 2
|
4 |
|
Option 3
|
5 |
|
Option 4
|
3 |
Forces of 3N, 4N and 12N act at a point in mutually perpendicular direction. The magnitude of the resultant force in Newton’s is
|
Option 1
|
6 |
|
Option 2
|
15 |
|
Option 3
|
7 |
|
Option 4
|
11 |
A body at rest may have_______________
|
Option 1
|
Momentum |
|
Option 2
|
Velocity |
|
Option 3
|
Energy |
|
Option 4
|
Speed |
We know that forces are vectors because
|
Option 1
|
They always add to zero |
|
Option 2
|
They have magnitude |
|
Option 3
|
They obey the same mathematical rules that displacements obey |
|
Option 4
|
They are defined in such a way that they are vectors |
What acceleration will a force of 5N impart to a mass of 5kg?
|
Option 1
|
5N/kg |
|
Option 2
|
5M/sec2 |
|
Option 3
|
1M/sec2 |
|
Option 4
|
2M/sec2 |
