MODULE 3

Question 1

Basic mechanics

Answer 1

static forces, dynamic forces and all types of motion

Question 2

physiological and anatomical biophysics include

Answer 2

Basic Mechanics, Fluid Dynamics, Acoustics and Optics, Heat and Energy, Materials Strengths and Elasticity

Question 3

mechnaics in physics means

Answer 3

application of forces to physical objects

Question 4

branch of biophysics that deals with the application of forces to biological objects

Answer 4

BIOMECHANICS

Question 5

It is the mechanics of a living body especially of the forces exerted by muscles and gravity on the skeletal structure.

Answer 5

BIOMECHANICS

Question 6

Biomechanics includes studying

Answer 6

a. THE MOTION OF ANIMALS
b. THE MECHANICS OF VARIOUS SYSTEMS WITHIN THE BODY
c. MECHANICS AT A CELLULAR AND SUBCELLULAR LEVEL

Question 7

Biomechanics is studied at all levels:

Answer 7

Subcellular, Physiological and Environmental

Question 8

TRUE OR FALSE: Biomechanics may be more closely related to bioengineering or biomedical engineering than biophysics.

Answer 8

TRUE

Question 9

Physical quantities describing motion of living organisms

Answer 9

1. Distance (d)
2. Displacement (x)
3. Speed (v)
4. Velocity (v-bold)
5. Acceleration (a-bold)

Question 10

a scalar quantity that describes the total length of the path that the object travels.

Answer 10

DISTANCE

Question 11

A vector quantity that describes the position of the object measured from a reference point. The quantity has both magnitude and direction.

Answer 11

DISPLACEMENT

Question 12

A scalar quantity that describes the distance traveled in a given time interval.

Answer 12

SPEED; v = d_t/ t_t

Question 13

Time rate of change of displacement

Answer 13

VELOCITY; v =∆x/ ∆t

Question 14

A vector quantity that defines the time rate of change of velocity. It specifies how rapidly the velocity of an object is changing.

Answer 14

ACCELERATION

Question 15

FORMULA FOR ACCELERATION:

Answer 15

a = (Vf - Vi)/ (tf - ti)

Question 16

It is the distance covered by the body per unit time

Answer 16

SPEED

Question 17

TRUE OR FALSE: The average speed of a moving body can be never be zero.

Answer 17

TRUE

Question 18

TRUE OR FALSE: Speed of a moving body can be positive, negative, or zero (depending on point of reference)

Answer 18

FALSE, CAUSE IT IS VELOCITY

Question 19

TRUE OR FALSE: Velocity can be used as speed if it is linear direction.

Answer 19

TRUE

Question 20

Acceleration occurs when the object

Answer 20

SPEEDS UP; SLOWS DOWN; CHANGES DIRECTION

Question 21

Acceleration is zero if the ______________

Answer 21

Velocity is constant

Question 22

Changing an object’s state of motion

Answer 22

FORCE

Question 23

A quantitative description of the interaction between two physical bodies, such as an object and its environment.

Answer 23

FORCE

Question 24

3 ELEMENTS OF FORCE

Answer 24

Origin
Magnitude
Direction

Question 25

forces arise because of physical contact between force and object

Answer 25

CONTACT FORCES

Question 26

forces without physical contact between objects

Answer 26

ACTION-AT-A-DISTANCE FORCES

Question 27

CONTACT FORCES

Answer 27

FRICTION FORCE TENSION FORCE NORMAL FORCE AIR RESISTANCE FORCE APPLIED FORCE SPRING FORCE

Question 28

ACTION-AT-A-DISTANCE FORCES

Answer 28

GRAVITATIONAL FORCE ELECTRICAL FORCE MAGNETIC FORCE

Question 29

An applied force is a force that is applied to an object by a person or another object (push and pull)

Answer 29

TRUE

Question 30

The force of gravity is the force with which the earth, moon, or other massively large object attracts another object towards itself. It is the weight of an object.

Answer 30

GRAVITY FORCE

Question 31

FORMULA FOR WEIGHT

Answer 31

W = m*g

Question 32

It is the vector sum of all the forces that act upon an object. It is also called as resultant force (R_F)

Answer 32

NET FORCE

Question 33

If the net force is 0, the acting forces acting upon an object is ____________________.

Answer 33

BALANCED

Question 34

If the net force is not equal to zero, the forces acting upon an object is __________________.

Answer 34

UNBALANCED

Question 35

These forces cause changed in the motion of an object, with different magnitude and direction.

Answer 35

UNBALANCED FORCES

Question 36

The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.

Answer 36

Newton's Second Law of Motion: LAW OF ACCELERATION a = Fnet/ m Fnet = ma