Cheatography

# Kinematics in One Direction Cheat Sheet by leahboyd14

### Displa­cement and Distance

 Displa­cement- vector extending from object's initial position to its final position Distance- scalar quantity repres­enting the actual path followed by an object Distance equals displa­cement when the object travels in a straight line and does not reverse its direction

### Velocity and Speed

 Velocity- vector describing the rate of displa­cement average velocity = displa­cem­ent­/time Instan­taneous velocity- velocity at a specific time Speed- scalar calcul­ating the rate of distance average speed = distan­ce/time If an object travels in a straight line, then speed and velocity are interc­han­geable

### Accele­ration

 Accele­ration- rate of change of velocity accele­ration = change in veloci­ty/time Uniform accele­ration- magnitude remains constant; constant accele­ration- magnitude and direction are constant If accele­ration acts in the same direction as velocity: speed increases If accele­ration acts in the opposite direction as velocity: speed decreases If accele­ration acts perpen­dic­ularly to velocity: direction changes The accele­ration of gravity is 10 m/s2

### Kinematic Equations

 vf2 = vi2 + 2ax vf = vi + at x = vi*t + 0.5at2 v=x/t or x=vt

### Kinematic Graphs

 GRAPH SLOPE AREA Position (or distance) v. time Velocity N/A Velocity v. time Accele­ration Displa­cement (change in position) Accele­ration v. time N/A Change in velocity