motion in one dimension

ap physics 1 motion quiz!!

motion

a change in position

frame of reference

a point against which position is measured

displacement

straight line distance from the initial position to the final position

true

T/F: displacement can be positive or negative

displacement

change in position

final position-initial position

formula for displacement

positive

positive/negative: displacement to the right

positive

positive/negative: displacement to the east

negative

positive/negative: displacement to the left

negative

positive/negative: displacement to the west

positive

positive/negative: displacement up

positive

positive/negative: displacement to the north

negative

positive/negative: displacement down

negative

positive/negative: displacement to the south

average velocity

displacement divided by the time interval

change in position/change in time

formula for average velocity

m/s

SI units for average velocity

true

T/F: speed does not include direction while velocity does

speed

______________ uses distance instead of displacement

zero

in a round trip, the average velocity is ______________

distance traveled/time of travel

formula for average speed

false

T/F: in a round trip, the average speed is zero

constant speed

if the motion is a straight line on a position-time graph, it shows ______________

positive

an object that has a constant velocity to the right would have a ______________ slope on a position-time graph

positive

an object that has a constant velocity up would have a ______________ slope on a position-time graph

zero

an object that has a constant velocity of zero would have a slope of ______________ on a position-time graph

negative

an object that has a constant velocity to the left would have a ______________ slope on a position-time graph

negative

an object that has a constant velocity downward would have a ______________ slope on a position-time graph

instantaneous velocity

velocity at a single instant of time

change in velocity/time required for change

formula for average acceleration

m/s^2

the SI units for acceleration

acceleration

the rate of change in velocity

positive, positive

an object moving right as it speeds up would have a _____________ velocity and _____________ acceleration

positive, negative

an object moving right as it slows down would have a _____________ velocity and _____________ acceleration

negative, negative

an object moving left as it speeds up would have a _____________ velocity and _____________ acceleration

negative, positive

an object moving left as it slows down would have a _____________ and _____________ acceleration

acceleration

the slope of a velocity-time graph is the _____________

average speed

the _____________ is the midpoint of a velocity-time graph

(initial velocity + final velocity)/2

the formula for average velocity