one dimensional projectile motion post-activity units: projectile - an object for which the only...

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g F y y a m F y g a m F y a m mg g a y N One Dimensional Projectile Motion Post-Activity kgm 2 2 s m kg s kgm kg N Unit s: 2 8 . 9 8 . 9 s m kg N g a y Projectile - an object for which the only force acting upon it is gravity. The force of air resistance is negligibly small or nonexistent for a projectile.

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Page 1: One Dimensional Projectile Motion Post-Activity Units: Projectile - an object for which the only force acting upon it is gravity. The force of air resistance

gF

yy amF

yg amF

yammg

gay

kgNay 8.9

One Dimensional Projectile Motion Post-Activity

kgN

kgs

kgm

kgN 2

2

2

sm

kgs

kgm

kgN

Units:

28.98.9s

mkg

Ngay

Projectile - an object for which the only force acting upon it is gravity. The force of air resistance is negligibly small or nonexistent for a projectile.

Page 2: One Dimensional Projectile Motion Post-Activity Units: Projectile - an object for which the only force acting upon it is gravity. The force of air resistance

gF

ooyy

oyo

oyyo

oyy

yygvv

tgtvyy

tvvyy

tgvv

2

21

21

22

2

Kinematic Equations

28.98.9s

mkg

Ngay

28.9

smg

ay

x

onaccelerati Fall Free the withreplaced

are onsaccelerati all that and , positions vertical

withreplaced are positions horizontal all that Notice

Uniform Acceleration!

One Dimensional Projectile Motion Post-Activity

Projectile - an object for which the only force acting upon it is gravity. The force of air resistance is negligibly small or nonexistent for a projectile.

Page 3: One Dimensional Projectile Motion Post-Activity Units: Projectile - an object for which the only force acting upon it is gravity. The force of air resistance

A minivan falls off of a 221 m tall building.

a. What is its velocity as it hits the ground?

What do you need to know?

?yvWhat are you given?

myy o 221

0oyv

28.9 smg

ooyy yygvv 222

smvy 66

oy yygv 22

ms

mvy 2218.92 2

oy yygv 2 oy yygv 2

One Dimensional Projectile Motion Example

Page 4: One Dimensional Projectile Motion Post-Activity Units: Projectile - an object for which the only force acting upon it is gravity. The force of air resistance

A minivan falls off of a 221 m tall building.

b. How long did it stay in the air?

What do you need to know?

?tWhat are you given?

myy o 221

0oyv

28.9 smg

2

2

1tgtvyy oyo

2

2

1tgyy o

22 tgyy o

22t

g

yy o

One Dimensional Projectile Motion Example

Page 5: One Dimensional Projectile Motion Post-Activity Units: Projectile - an object for which the only force acting upon it is gravity. The force of air resistance

A minivan falls off of a 221 m tall building.

b. How long did it stay in the air?

g

yyt o

2

2 8.9

2212

smm

t

st 7.6

?tmyy o 221

0oyv

28.9 smg

One Dimensional Projectile Motion Example

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