Question

A bus starts from city A and reavhes city B which is 160 km away towards south in 4 hours. What would be the velo ity of the bus

Answer 1

Time taken to reach: 4 hours
Distance travelled: 160 km
Speed of bus = distance / Time = 160/4 = 40 km/hr
Now velocity is just the vector form of speed(for this question), it contains direction as well as magnitude
So we will say (velocity of the bus is 40km/hr towards South)

Answer 2

$\underline{\rule{200}{2}}$

According to the question,

• The bus travels 160 km towards South from A to B.

• It takes 4 hours to reach at its destination i.e. at B.

• The bus does not change its direction, so it moves 160 km straight towards South.
• So here, the distance travelled = Displacement

• Or, Speed = Velocity

Now,

distance(s) = 160 km

Time(t) = 4 hours

Velocity(v) = s/t = 160/4

= 40 km/h

$\underline{\rule{200}{2}}$

# MrNameless