A person crosses a 600 m long street in 5 minutes. What is his speed i...
Speed = (600/5*60)m/sec.
= 2 m/sec.
Converting m/sec to km/hr
= (2*18/5)km/hr
= 7.2 km/hr.
View all questions of this testA person crosses a 600 m long street in 5 minutes. What is his speed i...
A person crosses a 600 m long street in 5 minutes. What is his speed i...
Given,
Length of the street = 600 m
Time taken to cross the street = 5 minutes
To find,
Speed in km per hour
Formula:
We know that,
Speed = Distance / Time
Step-by-step solution:
1 minute = 1/60 hour (Time conversion)
Therefore, time taken to cross the street = 5/60 = 1/12 hour
Distance is given in meters, so we need to convert it into kilometers
Distance = 600 m = 0.6 km (Distance conversion)
Speed = Distance / Time
Speed = 0.6 / (1/12)
Speed = 7.2 km/hr (Answer)
Therefore, the person's speed in km per hour is 7.2, which is option (D).