fyz kinematics

Question 1

Mechanics

Answer 1

field of physics -> study about forces, motion and effect of forces on objects

Question 2

Kinematics

Answer 2

subfield of mechanics that describes motion without considering the force
Also referred as geometry of motion

Question 3

Mass

Answer 3

Amount of stuff/substance of an object

Question 4

Weight

Answer 4

Mass × gravitational acceleration

Question 5

Center of mass

Answer 5

The point that you can consider its whole weight to act through

Question 6

Reference point

Answer 6

Specific location or object used to determine the position/motion of another object

Question 7

Frame of reference

Answer 7

Way to observe and measure positions and movements. It acts like a coordinate system, helping us understand where things are and how they move

Question 8

Rest

Answer 8

Object doesn’t move/doesn’t change its position

Question 9

Motion

Answer 9

Object is moving/changing position in respect to other objects

Question 10

Position

Answer 10

The specific point where the object is located, usually described through coordinates

Question 11

Trajectory

Answer 11

geometric line created by an object’s motion

Question 12

Distance

Answer 12

Scalar quantity - measures total length of the path travelled by an object

Question 13

Displacement

Answer 13

Vector quantity - change of the position of the object, distance between initial position and final position

Question 14

Speed

Answer 14

Scalar - how fast something is moving, regardless of direction

Question 15

Velocity

Answer 15

Vector - Rate of change of an object’s displacement

Question 16

Types of velocity (8)

Answer 16

1. Uniform - equal displacements in equal time
2. Constant - constant speed in a constant direction
3. Non-Uniform - unequal displacements in equal time
4. Instantaneous - at a certain moment
5. Average - total displacement/total time
6. Initial - t=0
7. Final - maximum velocity
8. Angular

Question 17

Acceleration

Answer 17

Vector - Rate of change of an object’s velocity

Question 18

Types of acceleration (4)

Answer 18

1. Uniform,
2. Non-Uniform,
3. Average,
4. Instantaneous

Question 19

Retardation/Deceleration/Negative acceleration

Answer 19

Decrease of velocity over time - opposite of acceleration

Question 20

Centripetal acceleration

Answer 20

Acceleration of an object moving in a circular path( a= v^2/r)

Question 21

Types of motion (5)

Answer 21

1. Rectilinear - straight line
2. Circular - circular path -> always accelerated because the change of direction
3. Uniform - constant speed
4. Non-Uniform - Speed changes over time
5. Projectile - affected by gravity - moves horizontally and vertically