mechanics (mass, force, acceleration, work, energy, momentum, velocity) - Category wise Question and Answer Practice Test with Solutions
mechanics (mass, force, acceleration, work, energy, momentum, velocity) PRACTICE TEST [5 - EXERCISES]
set 1
set 2
set 3
set 4
set 5
Question : 2
For a body falling freely under gravity from a height
a) both kinetic energy as well as potential energy go on increasing
b) only the kinetic energy goes on increasing
c) only the potential energy goes on increasing
d) the kinetic energy goes on increasing while potential energy goes on decreasing
Answer »Answer: (d)
Question : 5
A particle is projected at some angle from the surface of the planet. The motion of the particle is described by the equation; x = t, y = t - $t^2$ . Then match the following columns and select the correct answer using the codes given below the lists.
Column I (Quantity) | Column II (Magnitude only) |
A. velocity of projection | 1. 1 |
B. acceleration | 2. $√2$ |
C. time of flight | 3. 2 |
D. maximum height attained | 4. $1/4$ |
a) A – 2 ; B – 3 ; C – 1 ; D – 4
b) A – 2 ; B – 1 ; C – 4 ; D – 3
c) A – 1 ; B – 2 ; C – 3 ; D – 4
d) A – 4 ; B – 3 ; C – 2 ; D – 1
Answer »Answer: (a)
A → (2) ; B → (3) ; C→ (1) ; D → (4)
Option: (A) Ux = ${dx}/{dt}$ = 1 and Uy = ${dx}/{dt}$ = 1 – 2t
∴ Ut=0 = √{U2x + y2y} + √{12 + 12}= √2 m/s.
Option: (B) ax = ${d^2 x}/{dt^2}$ = 0
dy = ${d^2 y}/{dt^2}$ = – 2
Option: (C) For the time of flight,
y = 0
or 0 = t – t2
∴ t = 1s.
Option: (D) For maximum height, t = $1/2$ s.
∴ H = t – t2 = $1/2$ - $(1/2)^2$ = $1/4$ m.
IMPORTANT general science mcq EXERCISES
set 1 Online Quiz
Click to Start..general science mcq CATEGORIES
-
» Measurement And SI Units
-
» Measuring Devices And Scales
-
» Mechanics (Mass, Force, Acceleration, Work, Energy, Momentum, Velocity)
-
» Force Of Gravity, Solids And Fluids
-
» Motion Under Gravity
-
» Physical Properties Of Materials
-
» Light, Heat, Thermodynamics, Wave Motion, Sound, Optics & Oscillations
-
» Electric Current And Magnetism
-
» Nuclear Physics And Conductivity
-
» Modern And Space Physics, Sources Of Energy
-
» General Concepts Of Chemistry
-
» Nature Of Matter And Composition
-
» Atomic Structure Molecules And Nuclear Chemistry
-
» Classification Of Elements, Chemical Bonding, Periodicity In Properties & Physical Transformation
-
» Metals, Non Metals, Minerals, Ores, Properties, Uses
-
» Alloys, Carbon & Its Various Forms, Hydrogen & Compounds, Sulphur, Nitrogen, Halogen & Inert Gases
-
» Acids, Bases, Salts And Metals
-
» Hydrocarbon, Alcohol, Polymer, Organic Acid And Explosive Substance
-
» Fuel, Food Preservation, Nutrition, Medicine, Detergents And Fertilizers
-
» Inorganic Chemistry
-
» Organic Chemistry
-
» Environmental Chemistry
-
» Some Important Man Made Materials
-
» Sub Divisions Of Biology
-
» Genetics, Evolution Of Life & Ecological Biodiversity
-
» Taxonomy
-
» Heredity
-
» Biofertilizer
-
» Biological Classification Cell Tissues And Division
-
» Human Anatomy
-
» Blood Transport System
-
» Digestion And Excretion
-
» Photosynthesis
-
» Vitamins, Nutrition, Health, Disease And Treatment
-
» Endocrine Glands, Hormones
-
» Physiology Of Plants, Humans And Animals
-
» Reproduction
-
» Genetic Engineering And Bio Technology
RECENT BLOGS
Recently Added Subject & Categories For All Competitive Exams
Free Percentage Questions Answers for SSC STENO 2024 Exam
Important Top Percentage Aptitude-based multiple choice questions and answers practice quiz series, Online Mock Test PDF for SSC Steno Grade C & D 2024 Exam
Continue Reading »
Free Antonyms (English) MCQ Test for SSC STENO 2024 Exam
Top Antonyms General English Section-based multiple choice questions and answers, Free Full Test Series & Online Quiz PDF for SSC Steno Grade C & D 2024 Exam
Continue Reading »
Free Ratio & Proportion MCQ Test for SSC STENO 2024 Exam
Top Ratio and Proportion Aptitude-based multiple choice questions and answers practice test series, Online MCQ Quiz PDF for SSC Steno (Grade C & D) 2024 Exam
Continue Reading »
Free Synonyms (English) MCQ Test for SSC STENO 2024 Exam
Top Synonyms General English Section-based multiple choice questions and answers, Free Full Test Series & Online Quiz PDF for SSC Steno Grade C & D 2024 Exam
Continue Reading »