Projectile Motion - General Physcis - Lecture Slides, Slides of Physics

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Projectile Motion

Horizontal and Vertical Motion 

Position, velocity and acceleration are vectors.



These vectors can be separated into components.

•^

Choose x for horizontal

-^

Choose y for vertical



The equations for constant acceleration can bewritten separately in each coordinate.

0

0

2

1 2

0

0

2

1 2

0

0

2

1 2

r t v t a r

y t v t a y

x t v t a x

y

y

x

x

^

Moving Target 

A target drops as a projectile is fired. To hit thetarget, the projectile should be aimed

•^

A) Above the target.

-^

B) At the target.

-^

C) Below the target at the point they should collide.

-^

D) Below the target under the point they should collide.

Vertical Pull 

All falling objects are subjectto the same gravitationalacceleration. 

The horizontal componentdoesn’t affect the downwardacceleration.

Horizontal Speed

next

^ 

/ cos cos/ 0 0 0

0

(^0) x

x x

x v v

v

v

t x

v

x t v x





 







The point of collision measures thedistance dropped since the ball wasfired. 

The time determines the horizontalvelocity of the ball. 

The angle of the launcher gives thetotal velocity.