Unit 1: Kinematics

Question 1

Kinematics

Answer 1

the study of motion

Question 2

Motion

Answer 2

a change in an objects location as measured by a particular observer

Question 3

Distance (d)

Answer 3

the total length of the path travelled by an object in motion

Question 4

Direction

Answer 4

the line moves along from a particular starting point

Question 5

Scalar

Answer 5

a quantity that has only Magnitude (size)

Question 6

vector

Answer 6

a quantity that has magnitude (size) and direction

Question 7

position (d–>)

Answer 7

the distance and direction of an object from a reference point

Question 8

displacement (/_\ –> d)

Answer 8

the change in position of an object

Question 9

vector scale diagram

Answer 9

a vector diagram drawn using a specific scale

Question 10

directed line segment

Answer 10

a straight line between two points with specific direction

Question 11

Average Speed (V av)

Answer 11

the total distance travelled divided by the total time taken to travel that distance

Question 12

Average velocity(V–> av)

Answer 12

the total displacement, or change in position, divided by the total time for that displacement

Question 13

Position time graph

Answer 13

a graph describing the motion of an object, with position on the vertical axis and time on the horizontal axis

Question 14

slope (m)

Answer 14

a measure of the steepness of a line

Question 15

Rise

Answer 15

vertical change between 2 points on a line

Question 16

run

Answer 16

horizontal change between 2 points on a line

Question 17

Motion with Uniform or Constant Velocity

Answer 17

Motion of an Object at a constant speed in a straight line

Question 18

Motion with Non uniform velocity (Accelerated Motion)

Answer 18

motion in which the object’s speed changes or the object does not travel in a straight line

Question 19

Acceleration

Answer 19

how quickly on objects over time (rate of change of velocity)

Question 20

velocity - time graph

Answer 20

a graph describing the motion of an object, with velocity on the vertical axis and time on the horizontal axis

Question 21

Motion with Uniform Acceleration

Answer 21

motion in which velocity changes at a constant rate

Question 22

instantaneous velocity

Answer 22

the velocity of an object at a specific instant in time

Question 23

acceleration time graphs

Answer 23

a graph describing motion of an object with acceleration on the vertical axis and time on the horizontal axis

Question 24

acceleration due to gravity (g)

Answer 24

the acceleration that occurs when an object is allowed to fall freely, close to Earths surface. g has a value 9.8 m/s’s

Question 25

Free Fall

Answer 25

the accelerations due tp gravity of object in the absence of air resistance

Question 26

Terminal Velocity

Answer 26

The velocity of an object when the force due to gravity on the object

Question 27

resultant vector

Answer 27

a vector that result from adding 2 or more given vectors

Question 28

component vectors

Answer 28

vectors which when added together gives the original vector from which they were derived: one component is parallel to the axis and the other is parallel to the y axis

Question 29

projectile

Answer 29

an object that moves along a 2 dimensional curved trajectory in response to gravity

Question 30

projectile motion

Answer 30

the motion of a projectile under gravity

Question 31

time of flight

Answer 31

the time taken for a projectile to complete its motion