Projectile Motion Flashcards
What is projectile motion?
The superposition of two independent motions.
What is characteristic about projectile motion in the x direction?
Its motion is uniform.
What is the acceleration of a projectile in the x direction?
a=0
What is the horizontal equation for projectiles?
xf/t=Vx
What is the acceleration of a projectile in the y direction?
Freefall motion -9.8m/s2
What is the trig identity for 2 x (cos(θ) x Sin (θ))?
Sin (2θ)
What are Newtons 3 laws of motion?
- The law of inertia
- Force Equation
- Action Reaction Law
What is the law of inertia?
An object in motion or at rest stays in motion or at rest unless acted on by an outside force.
What is inertia?
An objects resistance to motion
What is the formula for momentum?
p=mass x velocity
What are the si units for mass?
kg
What are the si units for velocity?
m/s
What is the force equation?
F= (m x ΔV)/ ΔT) or F= mass x acceleration
What is the action reaction law?
for every action there is an equal and opposite reaction
What do forces come in?
pairs
What are the steps to solving a force analysis problem?
- draw a freebody diagram of each object of interest
- resolve all vectors into x and y components
- redraw free body diagram using only x and y components
- sum together like components
- apply newtons second law
What are the si units for force?
Newtons
What is the equation for centripidal motion?
F=mv2/r
What is the importance of Newtons First Law?
It lets us define force
What is the importance of Newtons Second Law?
It allows the calculation of force for a motion F=ma
What is the importance of Newtons Third Law?
It tells us that forces come in pairs.
What is the range equation?
R=Vi2 x Sin(2θ)/g
What is the acceleration equation for centripidal motion?
A=v2/r
