Velocity
Is velocity a scalar or vector?
Velocity is a vector.
Is speed a scalar or vector?
Speed is scalar
An amount someone travels.
What makes velocity different from speed?
Direction and Displacement
How is speed written?
distance/ time
The distance between starting position and end position.
Displacement
How is velocity written?
displacement/time and direction
If a car travels 30km in 20 minutes, what was the speed of the car?
1.5km/minute
Quantities that are fully described by a magnitude (or number) only.
Scalar
A car has a displacement of 250m in the South direction in 12 seconds. What is the cars velocity?
20.83m/s South
If a car travelled at a speed of 45 km/hour, and travelled for 3 hours, how many km did the car travel?
135 km
Quantities that are described by a magnitude (number) and a direction.
Vector
A car has travelled from point A to point B. Displacement is 220m. If velocity is 44m/s in the South direction, how many seconds did it take the car to be displaced 220m?.
5 seconds
If a car was travelled 125 km going 45 km/h, how many hours did the car take?
2.8 hours.
Distance travelled by an object is the same for each time interval.
Constant motion