To determine how far a car travels in 1/2 minutes with a velocity of 72 km/hr, we need to convert the velocity from kilometers per hour to the appropriate unit of distance per time.
Given that the car's velocity is 72 km/hr, we can convert it to km/min by dividing it by 60, since there are 60 minutes in an hour:
Velocity in km/min = 72 km/hr / 60 min/hr = 1.2 km/min
Now, we can calculate the distance traveled by multiplying the velocity by the time:
Distance = Velocity × Time
Plugging in the values, with a time of 1/2 minutes (0.5 minutes):
Distance = 1.2 km/min × 0.5 min = 0.6 km
Therefore, if a car's velocity is 72 km/hr, it will travel approximately 0.6 kilometers in 1/2 minutes.