CBSE Class 12 Physical Education Unit 8 Biomechanics and Sports MCQs Set 03

Question. Which of these is a cause of friction ?
(a) Roughness of surface
(b) Strong molecular force of attraction
(c) Both i and ii
(d) None of these

Answer : C

Question. _____ tends to change a body’s state of rest or motion.
(a) Biomechanics
(b) Force
(c) Dyna mics
(d) Kinematics

Answer : B

Question. ______ analyses motion in terms of time, displacement, velocity or acceleration.
(a) Biomechanics
(b) Force
(c) Kine ma tics
(d) Speed

Answer : C

Question. Friction is caused wh en objects move ____ _ each other.
(a) Across
(b) Alongwith
(c) Parallel
(d) None of these

Answer : A

Question. Which of these is a type of friction?
(a) Static
(b) Sliding
(c) Rolling
(d) AU of these

Answer : C

Question. ______ is the field in sport science that applies laws of mechanics and physics to human performance.
(a) Biomechanics
(b) Force
(c) Dynamics
(d) Speed

Answer : A

Case Based MCQ Questions Class 12 Physical Education Biomechanics and Sports

The teachers as well as coaches always make their best efforts to improve the performance of their students in various competitive games and sports. They can help to improve the performance of students if they have adequate knowledge of biomechanics.

Question. The more force one exerts on the downward bounce, the higher the ball bounces into the air. Which law is this statement being referred to?
(a) Newton’s 1st law
(b) Newton’s 2nd law
(c) Newton’s 3rd law
(d) Law of gravitation

Answer : C

Question. The study of human body and various forces acting on it is
(a) Biology
(b) Biomechanics
(c) Physiology
(d) Anatomy

Answer : B

Question. Among the above given pictures, Newton’s 3rd law is depicted in
(a) First
(b) Second
(c) Both
(d) None of these

Answer : C

Question.The acceleration of an object depends directly upon the net force acting upon the object and inversely upon the object’s
(a) Weight
(b) Mass
(c) Height
(d) Density

Answer : B

Question. A high jumper can jump higher off a solid surface because it opposes his or her body with as much force as he or she is able to generate. This example refers to
(a) Law of conservation
(b) Law of inertia
(c) Law of action & reaction
(d) Law of gravity

Answer : C
 

During the physical education class Newton’s Laws of motion were discussed and their practical application in sports events was explained to students. These laws are most relevant in sports as most of the actions in sports are related to these laws. On the basis of this information answer the following questions.

Question. Newton’s First law of motion is also known as?
(a) Law of inertia
(b) Law of Momentum
(c) Law of reaction
(d) Law of acceleration

Answer : A

Question. Newton’s second law is also known as
(a) The law of reaction
(b) The law of inertia
(c) The law of acceleration
(d) None of these

Answer : C

Question. What is the relationship between Mass and force?
(a) Directly proportional
(b) No relationship
(c) Inversely proportional
(d) Both a & c

Answer : D
 

Sohan, a new student in the school was very much interested in taking part in the school sports events. He was taught the latest rules and regulations of football game. In due course, he learnt biomechanical aspects of the game including various movements.

Question. Flexion and extension comes under ___________ movement.
(a) Gliding
(b) Angular
(c) Rotation
(d) Circumduction

Answer : B

Question. Straightening parts of a joint so that the angle increases
(a) Flexion
(b) Extension
(c) Abduction
(d) Adduction

Answer : B

Question. Moving a part away from mid line is
(a) Flexion
(b) Extension
(c) Abduction
(d) Adduction

Answer : C

Question. The type of movement in which the angle between joint decreases is called
(a) Flexion
(b) Extension
(c) Gliding
(d) Sliding

Answer : A

Question. Moving a part towards the mid line is
(a) Flexion
(b) Extension
(c) Abduction
(d) Adduction

Answer : D
 

In biomechanics class, Gopi, the teacher, brings the students to the physics lab of his school. The students get confused. After the completion of the class, they realize the fact.

Question. Why does the teacher bring the students to physics lab for biomechanics class?
(a) It deals with physics principle.
(b) Sliding friction
(c) Rolling friction
(d) Static friction

Answer : A

Question. Friction can be increased by which of the following?
(a) Smooth surface
(b) Dry surface
(c) Decrease the Weight
(d) All of this

Answer : B

Question. Biomechanics is associated with
(a) Mechanic
(b) Physics
(c) Mechanic and Physics
(d) Mechanic and Anatomy

Answer : D

Fill in the blanks:

Question. ______ friction is a divergent force.
Answer : Dynamic

Question. Flexion refers to a movement that _ ___ _ the angle between two body parts.
Answer : decreases

Question. For every action there is an ______ and ______ reaction.
Answer : equal, opposite

Question. The force acting along two surfaces in contact, which opposes the motion of one body over the other, is called the force of _____ _
Answer : friction

Question. _____ _,,ave the three laws o.f motion.
Answer : Newton

Question. ______ is a movement towards the midline.
Answer : Adduction

Question. ______ refers to a movement that increases the angle between two body parts.
Answer : Extension

Question. According to Law of —–~ “A body at rest will remain at rest and a body in motion will remain in motion at llie same speed and in the same direction unless acted up on by an external force”.
Answer : Inertia

Question. The larger the area of contact between the su rfaces, th e ______ the force of friction.
Answer : greater

True or False:

Question. lf an object is in motion, it remains in motion unless something or some external force stops it.
Answer : True

Question. Body movements include abduction, adduction, flexion, extension, etc.
Answer : True

Question. Rolling friction occurs when an object slides over another.
Answer : False

Question. Abduction is a movement tow.uds the midline.
Answer : False

Question. A change in acceleration of an object is inversely proportional to the force producing it and inversely proportional to its mass.
Answer : False