projectile motion

Question 1

what is projectile motion

Answer 1

refers to the movement of an object of an object or a body through the air

Question 2

what is horizontal displacement

Answer 2

the shortest distance from the starting point to the finish point in a line parallel to the ground

Question 3

what are the three factors that affect horizontal displacement

Answer 3

angle of release
speed of release
height of release

Question 4

if the release height and intended landing height is the same what is the optimal angle of release for an object

Answer 4

45 degrees

Question 5

if the release height of an object is below the landing height the release angle needs to be…

Answer 5

greater than 45 degrees to maximise displacement

Question 6

an example of when the release height of an object is below the landing height

Answer 6

shooting a basketball

Question 7

if the release height is greater than the landing height the optimum angle of release needs to be…

Answer 7

less than 45 degrees

Question 8

an example of when the release height is greater than the landing height

Answer 8

throwing a shot putt

Question 9

what is the angle of release determined by

Answer 9

the height of the performer
strength of the performer

Question 10

keeping the angle of release smaller means ..

Answer 10

more speed can be generated

Question 11

a world class shot putter will release between which angles

Answer 11

26 and 38 degrees

Question 12

how does the speed/velocity of release affect the horizontal displacement

Answer 12

the greater the velocity of a projectile the greater the horizontal displacement travelled

Question 13

how can the speed of release be increased for throwing sports

Answer 13

add a run up, shift or rotation

Question 14

why does increased speed of release mean greater HD

Answer 14

because if the mass of the performer stays the same, and the velocity increases it will mean that the momentum would increase which will enable a longer flight which results in greater HD

Question 15

how does the height of release affect HD

Answer 15

the greater the release height the increased HD

Question 16

if the angle of release and velocity were the same a taller person would throw further/shorter than a shorter person

Answer 16

further

Question 17

what is the impact of gravity on height of release in relation to HD

Answer 17

the force of gravity is constantly acting on the mass of a shot put
therefore technically the shot putter should try and release as high as possible to maximise HD

Question 18

name 3 factors that affect the distance the shot travels (1)

Answer 18

height, speed and angle of release

Question 19

once projectiles are airborne they are only subject to …. (2)

Answer 19

gravity and air resistance

Question 20

air resistance defines …..

Answer 20

the projectile’s flight path

Question 21

gravity remains the ….. but after time gravity can turn …….. components into …….

Answer 21

remains constant
turn positive vertical into negative components

Question 22

what is true parabola

Answer 22

is a symmetrical and uniformed curve from the highest point

Question 23

what type of projectiles produce a true parabola and why

Answer 23

ones with a large weight force have a smaller air resistance and therefore follow a true parabolic flight path eg a shot putt

Question 24

what is distorted parabola and what kind of objects produce it

Answer 24

an asymmetrical curve
objects with lighter mass will be heavily affected by air resistance eg a shuttle continues in its flight then AR causes it to deviate from a true parabola into a distorted one

Question 25

when drawing vectors on a flight path which remains constant and which changes

Answer 25

horizontal component remains constant and vertical component decelerate upwards and then accelerate downwards

Question 26

pages 9-11 need looking at for diagrams