Question

A police car is travelling at 12 km/h is chasing a car B that is already 30 km away and is currently travelling at 90 km/h.How long (hours)will it take the police car to catch car B?

Answer 1

Answer:

.5 hr or 30 min

Step-by-step explanation:

in this question firstly we will take out the relative velocity

i.e.,

vc-vp=v

where,

vc=velocity of car

vp=velocity of police

v=relative velocity

90-30=60km/h it is relative velocity then we know that

t=s/v

t=30/60

t=.5 hr or 30 min to catch the thief