AP Physics 1
What two entities comprise a vector? - ANSMagnitude and direction
What do you do with any vector that is not on either the x or y axis? - ANSBreak it up into x and
y components using trig, add up the components.
How are velocity and speed different? - ANSVelocity has a direction and speed does not have
direction.
What quantity is calculated from slope of the displacement versus time graph? - ANSvelocity
What does upward slope on a displacement versus time graph imply about the velocity. -
ANSThe velocity is positive
What is acceleration? - ANSHow quickly you change velocity.
What is the area under the velocity time graph? - ANSDisplacement
What is the y intercept of the velocity time graph? - ANSThe initial velocity, (Vo in the formulas)
What is the area under the acceleration versus time graph? - ANSThe CHANGE in velocity.
What is the horizontal acceleration of projectiles? - ANSZERO
What direction controls time in falling body and projectile motion problems? - ANSVertical
direction
What do you know about two objects that are launched at different horizontal velocities? -
ANSThey fall, vertically, the by the same amount in the same time.
What equation describes the distance that a dropped object falls "t" seconds after it started
moving? - ANSx=(1/2)at^2 Remember, the word "dropped" implies no initial velocity.
What equation describes the distance that a horizontally launched projectile falls t seconds after
it started moving? - ANSx=(1/2)at^2 ...Horizontal velocity does not affect the time of fall.
What equation describes the speed of a dropped object "t" seconds after it started moving? -
ANSV=Vo + at ...The word "dropped" means no initial velocity.
What equation describes the speed in the x-direction of a projectile "t" seconds after it started
moving? - ANSVx=(Vxo)t ...Recall that there is no acceleration in the horizontal direction.
What two entities comprise a vector? - ANSMagnitude and direction
What do you do with any vector that is not on either the x or y axis? - ANSBreak it up into x and
y components using trig, add up the components.
How are velocity and speed different? - ANSVelocity has a direction and speed does not have
direction.
What quantity is calculated from slope of the displacement versus time graph? - ANSvelocity
What does upward slope on a displacement versus time graph imply about the velocity. -
ANSThe velocity is positive
What is acceleration? - ANSHow quickly you change velocity.
What is the area under the velocity time graph? - ANSDisplacement
What is the y intercept of the velocity time graph? - ANSThe initial velocity, (Vo in the formulas)
What is the area under the acceleration versus time graph? - ANSThe CHANGE in velocity.
What is the horizontal acceleration of projectiles? - ANSZERO
What direction controls time in falling body and projectile motion problems? - ANSVertical
direction
What do you know about two objects that are launched at different horizontal velocities? -
ANSThey fall, vertically, the by the same amount in the same time.
What equation describes the distance that a dropped object falls "t" seconds after it started
moving? - ANSx=(1/2)at^2 Remember, the word "dropped" implies no initial velocity.
What equation describes the distance that a horizontally launched projectile falls t seconds after
it started moving? - ANSx=(1/2)at^2 ...Horizontal velocity does not affect the time of fall.
What equation describes the speed of a dropped object "t" seconds after it started moving? -
ANSV=Vo + at ...The word "dropped" means no initial velocity.
What equation describes the speed in the x-direction of a projectile "t" seconds after it started
moving? - ANSVx=(Vxo)t ...Recall that there is no acceleration in the horizontal direction.
