physical science - module 1

motion

changing position relative to a reference point

displacement

distance and direction of a change in position relative from the starting point

speed

the rate at which an objects position changes

what are the axis's on a distance time graph

time is the x axis and distance is the y axis

what is the slope on a distance time graph

the speed

velocity

the distance and the speed relative to a reference point

how is an objects position described

relative to a reference point

what is momentum

defined for a particular frame of reference and the product of mass and velocity

acceleration

the rate of change of velocity

speed increases when

the acceleration and velocity are in the same direction

speed decreases when

the acceleration and velocity are in opposite directions

if an object is moving in a straight line the change in velocity is

the final speed minus the initial speed

acceleration toward the center of a curved path

centripetal acceleration