forces

Question 1

what is a force

Answer 1

Forces are pushes or pulls which enable us to start or stop
moving, change direction or maintain balance
Measured in Newtons (N)
1N = 1kg x 1.0 ms-2
(Force = mass x acceleration)

Question 1

what are characterizes of forces

Answer 1

Vector (magnitude and direction);
Point of application;
Line of application

Question 2

what forces are within the human body

Answer 2

Tensile forces

Compressive forces

Question 3

what is a Compressive force

Answer 3

Pushing force acting on the ends of an internal
structure (bones onto cartilage onto bones)

Question 4

what is a tensile force

Answer 4

pulling forces acting on the ends of an internal
structure (muscles onto tendons onto bones)

Question 5

what is an external force

Answer 5

External Forces act on an object as a result of its interactions with
the surrounding environment

Question 6

examples of contact forces

Answer 6

Ground reaction force, friction,
air resistance

Question 7

examples of non contact forces

Answer 7

Gravity, electromagnetic

Question 8

what is a colinear force

Answer 8

same line of action; same or opposite direction

Question 9

What is a concurrent force

Answer 9

Concurrent forces act through the same point of application but not
on the same line

• Resultant of two or more concurrent forces depends on both
  magnitude of each force and angle of application

Question 10

what is the center of gravity

Answer 10

The point through which the resultant force of gravity acts on a
body and entire weight of body is balanced