Week 26 - Projectile Motion Flashcards

1
Q

was is the constant of acceleration ?

A

-9.81 m/s^2

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2
Q

define projectile

A

a body undergoing projectile motion

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3
Q

define gravity

A

the attraction influence that pulls an object to its surface

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4
Q

define air resistance

A

limits the motion of a projectile

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5
Q

define trajectory

A

flight path of a projectile through the air

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6
Q

define parabola

A

trajectory follows a ‘parabolic’ curved shape that is symmetrical about its apaex

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7
Q

define apex

A

highest point reached by a projectile

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8
Q

define range

A

horizontal displacement of projectile

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9
Q

what 3 factors influence projectile motion ?

A
  • projection angle
  • projection velocity
  • projection height
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10
Q

what does the angle at release determine ?

A

the shape of the trajectory

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11
Q

what does the projection velocity determine ?

A

the height and range of a projectile

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12
Q

define vertical velocity

A

determines height and time of flight

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13
Q

define horizontal velocity

A

determines range

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14
Q

define projection height

A

the relative difference in height between release and landing (vertical displacement)

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15
Q

projection height = 0

A
  • height release is the same as landing

- symmetrical, parabolic trajectory

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16
Q

projection height > 0

A
  • height at release is above landing

- maximum range produced with release angle < 45

17
Q

projection height < 0

A
  • height at release is below landing

- maximum range produced with release angle > 45

18
Q

what are the 3 categories of projectile goals ?

A
  • predicting trajectory
  • controlling trajectory
  • maximising / optimising aspects of trajectory