Formulas
Speed = d/t
What's the formula for finding instantaneous speed?
The speed in a given direction (d/t)
What is the definition of Velocity?
An object is moving if its position relative to a fixed point is changing.
Explain relative motion.
An object moving under the influence of the gravitational force only.
What is Free Fall?
At the same speed it went up: 40 m/s.
At what speed would an object in projectile motion land if it was shot up at 40 m/s?
a = Δv / t
What is the formula for acceleration?
A quantity that measures both magnitude + direction.
What is a Vector Quantity.
Speed is a scalar quantity (measures magnitude) but Velocity is a vector quantity (measures magnitude + direction).
What is the difference between Speed + Velocity?
-9.8 m/s2
What is the precise rate at which objects fall due to gravity only.
It brings it down at an acceleration rate of -10m/s2
What does gravity do to an object in projectile motion?
d = 1/2 g * t2
How do you find the distance traveled of an object in free fall?
A quantity with only magnitude.
What is a Scalar Quantity?
Distance is a scalar quantity (measures magnitude) but Displacement is a vector quantity (measures magnitude + direction).
What is the difference between distance and displacement?
+ 10 m/s2
At what rate does an object's speed change when it is rising before it falls back downward?
It would keep going up in that direction.
What is the trajectory of an object in projectile motion if there was no gravity?
v = g*t
What is the formula for the velocity of an object in free fall?
The rate at which speed/velocity changes.
Define Acceleration.
m/s = velocity (v)
What does the slope of a Distance vs. Time Graph represent?
0 m/s!
What is the instantaneous speed of an object at its peak point before it falls back down?
a2 + b2 = c2
a2 + b2 = c2
What is the formula used to find the resolute of two perpendicular vectors?
The process of determining the components of a vector.
Define Resolution of perpendicular vectors.
m/s2 = acceleration (a)
What does the slope of a Velocity Vs. Time Graph represent?
A strong wind gust that causes objects to move in another direction or air that slows down objects that have large surface areas.
What is air resistance?
A projectile object shot at 75degrees has a higher vertical component than 15degrees.