Phunny Assumptions
The Phabulous VECTOR
Phun Projectile Problems
Phundamental Words
phunky formulas
100
What components of projectile motions are independent?
X-component and Y-component
100
True or False: energy is a vector.
FALSE
100
A student throws a rock off a cliff with a velocity of 17 m/s, if the rock takes 2.23s to hit the water, then what is the height of the cliff?
-24.83m
100
Define: Vector
A quantity that is physical that includes both magnitude and direction.
100
what is the formula for a basic trig function?
c2=a2+b2
200
What does the statement "we are in Happy Physics Land" mean?
There is nothing that will effect the projectiles velocity in the x direction and V is constant.
200
What are the two ways to find the resultant vector?
you can solve it graphically and algebraically
200
A soccer ball is kicked with an initial velocity of 10 m/s at an angle of 35o, how long is the ball in the air?
1.17s
200
Define: Resultant
The result of two or more vectors being added together
200
what is the formula for the magnitude for a resultant vector?
R2=Σx2 + Σy2
300
What variable links the X and Y-components of projectile problems?
Time
300
What is the X-component of 23Fb@34o?
19.1
300
Andrea is standing 6.2m away from a wall throwing a ball leaving her hand with a velocity of 32.19 m/s@32o. Her hand is 0.95m above the floor, how high up does the ball hit the wall?
4.61m
300
Define: components of a vector
The projections of a vector along the axes of a coordinate system
300
What formula do you use to find range?
dx=Vxt
400
In type-II projectiles, how do you determine the X and Y-components of the initial velocity?
Use the formulas Vx=ViCosθ and Viy=ViSinθ
400
What is the Y-component of 211Fb@202o?
-79.0
400
A football player is kicking a field goal from a distance of 45m from the goal post. The football is launched at 35o above horizontal. What initial velocity is required so that the football clears the goalpost crossbar that is 3.1m above the ground?
22.84m/s
400
Define: projectile motion
A form of motion experienced by an object or particle that is thrown near the Earth's surface and moves along a curved path under the action of gravity only.
400
Name the variable needed to solve a projectile problem?
For the X direction: Vx, dx, t
For the Y direction: Viy, Vfy, dy, t
500
How do you find the maximum height in a type-II projectile?
set Vfy=0
500
If vector A is 15N@30o and vector B is 60N@200o, what is the resultant vector?
R=45.30
500
A projectile starting from ground hits a target on the ground located at a distance of 1000 meters after 40 seconds. What is the size of the angle?
82.7o
500
Define: physics
A REAL science that deals with matter and energy and their interactions in the fields of mechanics, acoustics, optics, heat, electricity, magnetism, radiation, atomic structure, and nuclear phenomena.
500
What are the 3 free fall equations that are used to solve a project problem?
dy=1/2gt2+Viyt
Vfy=gt+Viy
Vfy2=Viy2+2gdy