Chapter 3 PROJECTILE MOTION How does a cannonball
![Chapter 3 PROJECTILE MOTION How does a cannonball fly? Chapter 3 PROJECTILE MOTION How does a cannonball fly?](https://slidetodoc.com/presentation_image_h/082ec622df9a073b3674829b16bc63a3/image-1.jpg)
Chapter 3 PROJECTILE MOTION How does a cannonball fly?
![Or: Did you realize that gravity and wind resistance effect things ? • We’ve Or: Did you realize that gravity and wind resistance effect things ? • We’ve](http://slidetodoc.com/presentation_image_h/082ec622df9a073b3674829b16bc63a3/image-2.jpg)
Or: Did you realize that gravity and wind resistance effect things ? • We’ve looked at LINEAR MOTION, or the motion of objects moving in a straight line. • Now we’ll look at NONLINEAR MOTION or motion along curved paths !
![When we throw a ball : • There is a constant velocity horizontal motion When we throw a ball : • There is a constant velocity horizontal motion](http://slidetodoc.com/presentation_image_h/082ec622df9a073b3674829b16bc63a3/image-3.jpg)
When we throw a ball : • There is a constant velocity horizontal motion • And there is an accelerated vertical motion • These components act independently of each other
![Vector and Scalar Quantities • Vector quantities require both magnitude and direction • They Vector and Scalar Quantities • Vector quantities require both magnitude and direction • They](http://slidetodoc.com/presentation_image_h/082ec622df9a073b3674829b16bc63a3/image-4.jpg)
Vector and Scalar Quantities • Vector quantities require both magnitude and direction • They are represented by arrows with a numerical value amount attached. • EXAMPLES of Vector Quantities: Power velocity Force acceleration Electric Current directed energies
![Vector and Scalar Quantities • Scalar quantities require magnitude ONLY and have no direction Vector and Scalar Quantities • Scalar quantities require magnitude ONLY and have no direction](http://slidetodoc.com/presentation_image_h/082ec622df9a073b3674829b16bc63a3/image-5.jpg)
Vector and Scalar Quantities • Scalar quantities require magnitude ONLY and have no direction component. • They are represented by a numerical value and units alone. • EXAMPLES of Scalar Quantities: Mass (grams) volume (ml, liters, cm 3) time (sec. , min. , hr. ) speed (m/sec) Scalars can be added, subtracted, multiplied or divided like ordinary numbers (3 kg + 4 kg = 7 kg) 15 min delay in a 60 min trip means the trip took 75 min.
![VELOCITY VECTORS • Represented by arrows. • The length of the arrow, drawn to VELOCITY VECTORS • Represented by arrows. • The length of the arrow, drawn to](http://slidetodoc.com/presentation_image_h/082ec622df9a073b3674829b16bc63a3/image-6.jpg)
VELOCITY VECTORS • Represented by arrows. • The length of the arrow, drawn to scale, indicates the magnitude of the vector. • The direction of the arrow indicates the relative direction of the vector quantity. • • Large quantity vector Small quantity vector
![Velocity Vector EXAMPLE • An Airplane flying at 100 km/hr with a km/hr wind Velocity Vector EXAMPLE • An Airplane flying at 100 km/hr with a km/hr wind](http://slidetodoc.com/presentation_image_h/082ec622df9a073b3674829b16bc63a3/image-7.jpg)
Velocity Vector EXAMPLE • An Airplane flying at 100 km/hr with a km/hr wind 20 • With the wind 100 km/hr + 20 km/hr = 120 km/hr • Against the wind • 100 km/hr - 20 km/hr = 80 km/hr
![So what happens when the plane meets a crosswind? • The resulting flight path So what happens when the plane meets a crosswind? • The resulting flight path](http://slidetodoc.com/presentation_image_h/082ec622df9a073b3674829b16bc63a3/image-8.jpg)
So what happens when the plane meets a crosswind? • The resulting flight path is not straight, but IS a result of both velocity vectors. RESULTANT 20 km/hr crosswind 100 km/hr direction
![VECTOR ADDITION • 3 Step Technique • Finds the RESULTANT of a pair of VECTOR ADDITION • 3 Step Technique • Finds the RESULTANT of a pair of](http://slidetodoc.com/presentation_image_h/082ec622df9a073b3674829b16bc63a3/image-9.jpg)
VECTOR ADDITION • 3 Step Technique • Finds the RESULTANT of a pair of component vectors that are at right angles (perpendicular) to each other. • 1. Draw the 2 vectors with their tails touching • 2. Draw a parallel projection of each vector to form a rectangle • 3. Draw the diagonal from the point where the 2 tails are touching
![VECTOR ADDITION – Step 1 • 3 • 4 VECTOR ADDITION – Step 1 • 3 • 4](http://slidetodoc.com/presentation_image_h/082ec622df9a073b3674829b16bc63a3/image-10.jpg)
VECTOR ADDITION – Step 1 • 3 • 4
![VECTOR ADDITION – Step 2 • 3 • 4 VECTOR ADDITION – Step 2 • 3 • 4](http://slidetodoc.com/presentation_image_h/082ec622df9a073b3674829b16bc63a3/image-11.jpg)
VECTOR ADDITION – Step 2 • 3 • 4
![VECTOR ADDITION – Step 3 • • 5 37. 50 4 VECTOR ADDITION – Step 3 • • 5 37. 50 4](http://slidetodoc.com/presentation_image_h/082ec622df9a073b3674829b16bc63a3/image-12.jpg)
VECTOR ADDITION – Step 3 • • 5 37. 50 4
![VECTOR ADDITION - Examples • Follow the example and complete the following vector addition VECTOR ADDITION - Examples • Follow the example and complete the following vector addition](http://slidetodoc.com/presentation_image_h/082ec622df9a073b3674829b16bc63a3/image-13.jpg)
VECTOR ADDITION - Examples • Follow the example and complete the following vector addition exercises.
![Component Vectors • Sometimes vectors need to be changed into an equivalent set of Component Vectors • Sometimes vectors need to be changed into an equivalent set of](http://slidetodoc.com/presentation_image_h/082ec622df9a073b3674829b16bc63a3/image-14.jpg)
Component Vectors • Sometimes vectors need to be changed into an equivalent set of Component vectors. • The vector is RESOLVED into 2 component vectors that are perpendicular to each other. • Any vector can be resolved into horizontal and vertical components.
![Components of Vectors • Resolving a vector into its components • Vertical Component Horizontal Components of Vectors • Resolving a vector into its components • Vertical Component Horizontal](http://slidetodoc.com/presentation_image_h/082ec622df9a073b3674829b16bc63a3/image-15.jpg)
Components of Vectors • Resolving a vector into its components • Vertical Component Horizontal Component
![PROJECTILE MOTION • A falling object with constant linear velocity and vertical acceleration : PROJECTILE MOTION • A falling object with constant linear velocity and vertical acceleration :](http://slidetodoc.com/presentation_image_h/082ec622df9a073b3674829b16bc63a3/image-16.jpg)
PROJECTILE MOTION • A falling object with constant linear velocity and vertical acceleration :
![Upwardly Launched Projectiles • Without gravity, a projectile launched upward would follow a straight Upwardly Launched Projectiles • Without gravity, a projectile launched upward would follow a straight](http://slidetodoc.com/presentation_image_h/082ec622df9a073b3674829b16bc63a3/image-17.jpg)
Upwardly Launched Projectiles • Without gravity, a projectile launched upward would follow a straight line. IDEAL PATH • The vertical distance a projectile falls beneath any point on the dashed 45 m line is the same distance 20 m it would fall if dropped 5 m from rest! 1 sec 2 sec ACTUAL PATH 3 sec
![PROJECTILE MOTION • Launch a projectile from high enough and fast enough and it PROJECTILE MOTION • Launch a projectile from high enough and fast enough and it](http://slidetodoc.com/presentation_image_h/082ec622df9a073b3674829b16bc63a3/image-18.jpg)
PROJECTILE MOTION • Launch a projectile from high enough and fast enough and it will fall around the curve of the Earth. • This is referred to as going into orbit and becoming a satellite.
![Velocity Vectors • An object is thrown in a long arc. • The horizontal Velocity Vectors • An object is thrown in a long arc. • The horizontal](http://slidetodoc.com/presentation_image_h/082ec622df9a073b3674829b16bc63a3/image-19.jpg)
Velocity Vectors • An object is thrown in a long arc. • The horizontal vector does not change while the vertical vector changes due to gravity!
![Projectile Motion • End Projectile Motion • End](http://slidetodoc.com/presentation_image_h/082ec622df9a073b3674829b16bc63a3/image-20.jpg)
Projectile Motion • End
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