Projectiles

Question 1

horizontal plane Vx

Answer 1

ux

Question 2

horizontal plane Sx

Answer 2

uxt

Question 3

horizontal plane Vy

Answer 3

uy - gt

Question 4

horizontal plane Sy

Answer 4

Uy.t - 1/2gt²

Question 5

up an inclined plane Vx

Answer 5

ucosa - gtsina

Question 6

up an inclined plane Sx

Answer 6

ucosa - 1/2gt²sinB

Question 7

up an inclined plane Vy

Answer 7

usina - 1/2gtcosB

Question 8

up an inclined plane Sy

Answer 8

utsina - 1/2gt² cosB

Question 9

down an inclined plane Vx

Answer 9

ucosa + gtsinB

Question 10

down an inclined plane Sx

Answer 10

utcosa + 1/2gt²sinB

Question 11

down an inclined plane Vy

Answer 11

usina - gtcosB

Question 12

down an inclined plane Sy

Answer 12

utsina - 1/2 gt²cosB

Question 13

time of flight

Answer 13

sy=0

Question 14

horizontal range

Answer 14

Sx @ sy=0

Question 15

time to max height

Answer 15

Vy = 0

Question 16

max height

Answer 16

Sy @ Vy = 0

Question 17

direction of motion before max height

Answer 17

tan θ = Vy/Vx

Question 18

direction of motion after max height

Answer 18

tan θ = -Vy / Vx

Question 19

path contains point (a,b)

Answer 19

sx = a
sy = b

Question 20

up an inclined plane, what is H

Answer 20

the perpendicular height to the inclined plane

Question 21

up an inclined plane, what is h

Answer 21

the perpendicular height the the original x-axis

Question 22

how do you find h?

Answer 22

to find H; Sy @ Vy = 0

h = H/cosB

Question 23

up an inclined plane, direction of motion before max height

Answer 23

tan θ = Vy/Vx

Question 24

up an inclined plane, direction of motion after max height , Vx is positive

Answer 24

tan θ = -Vy/Vx

Question 25

up an inclined plane, direction of motion after max height , Vx is negative

Answer 25

tan θ = Vy/Vx

Question 26

strikes the plane at right angles, 2 things we know

Answer 26

``` Sy = 0 (time of flight) Vx = 0 (direction) ```

Question 27

strikes the plane horizontally, 2 things we know

Answer 27

Sy = 0 (time of flight) | tan β̞ = -Vy/Vx (direction)

Question 28

what is β̞

Answer 28

angle between Vx and horizontal

Question 29

what is θ

Answer 29

angle between direction of motion (speed not velocity) and Vx

Question 30

collisions parallel to the fixed surface

Answer 30

no change

Question 31

collisions perpendicular to fixed surface

Answer 31

newtons experimental law

Question 32

projected downwards Vx

Answer 32

ucosa

Question 33

projected downwards Sx

Answer 33

ucosa t

Question 34

projected downwards Vy

Answer 34

usin a + gt

Question 35

projected downwards Sy

Answer 35

usina t + 1/2gt squared