Bell Work: Car Lab The car’s speed was ( constant / changing ) throughout the race. As the distance increased, the time ( increased / decreased ). So for the constant speed car, the distance and time are ( directly / inversely ) related. A graph of 2 things directly related will have a ( positive / negative ) slope.

Linear Motion (Ch2)

Time How long does it take? Scalar (no direction) t = time units: seconds (s), hour (h), minutes (min)

Distance How far? Scalar d or x = distance units: meters(m), centimeters(cm), kilometers(km)

Displacement How far? Vector (has direction) d or x = displacement Ex: 4 cm north 2.07 km left 0.043 m up

Speed How fast? Scalar v = speed Δv = change in speed units: meters per second (m/s), centimeters per second (cm/s), kilometers per hour (km/h)

Velocity Vector v = velocity Δv = change in velocity Ex: 20 m/s north 1.7 cm/s right

Acceleration Vector a = acceleration units: meters per second squared (m/s2 or m/s/s)

Position Direction Where you are located Which way you are moving; the course you take to reach your destination

Which is most similar to speed? Acceleration Displacement Time Distance Velocity

Which is most similar to distance? Acceleration Displacement Time Speed Velocity

Which cannot be negative? Acceleration Displacement Time Speed Distance Velocity

Which has the most complex unit? Acceleration Displacement Time Speed Distance Velocity

Acceleration Displacement Time Speed Distance Velocity Which are vectors? Acceleration Displacement Time Speed Distance Velocity

Which do not have a direction? Acceleration Displacement Time Speed Distance Velocity

Which are displayed in a car? Acceleration Displacement Time Speed Distance Velocity

Which is a change in position? Acceleration Displacement Time Speed Distance Velocity

Which is a change in velocity? Acceleration Displacement Time Speed Distance Velocity

Which is speed plus direction? Acceleration Displacement Time Speed Distance Velocity