Distance displacement speed and velocity

what is distance?

how far an object have moved

is this a scalar or vector quantity?

scalar as it doesn’t involve directions

what is displacement and is it a vector or scalar quanity?

vector quantity as it measures distance and direction in a straight line objects starting to finishing point

what is speed and velocity?

speed is how fast you’re going and velocity is speed in a given direction

how can objects have a constant speed and changing velocity?

• object has to have a change in direction whilst staying at same speed

• always have to rely on the direction for a change in velocity

how do we measure distance travelled with speed and time?

distance travelled (m)= speed(m/s) x time(s)

what can affect the speed of which a person travels at?

• fitness

• age

• distance travelled

• terrain

in what other type of things does the speed of objects vary?

• speed in sound, changes depends on what sound waves travelling through

• wind speed, affected by atmospheric pressure, temperature or structures nearby

what are the typical speeds for a person?

• walking =1.5 m/s

• running = 3 m/s

• cycling = 6 m/s

what are the typical speeds for a car, train, and plane?

• car = 25m/s

• train = 30 m/s

• plane = 250 m/s