1. Determine the time taken when the distance is 720 km and the speed is 60km/hr 2.A cyclist covers 960 m in 5 minutes. find his speed in km/hr. 3. A man runs at the speed of 10km/hr. how much time will he take to cover 750 metres? 4.Aaron ran 500 metres in 100 seconds. Find the speed in km per hour. give the answer in steps I will mark u as brainilist DONT SPAM PLS OTHERWISE I WILL REPORT YOU OKK
Answers
SOLUTION
We know that:
- Distance = Speed × Time
- Time = Distance / Speed
- Speed = Distance / Time
- 1 km = 1000 m
- 1 hour = 60 minutes
- 1 hour = 3600 seconds
Q.1) Determine the time taken when the distance is 720 km and the speed is 60 km/hr.
We have:
- Distance = 720 km
- Speed = 60 km/hr
Finding the time:
↣ Time = 720/60 hrs
↣ Time = 12 hrs
Q.2) A cyclist covers 960 m in 5 minutes. Find his speed in km/hr.
We have:
- Distance = 960 m
↣ 960 m = 960/1000 km
- Time = 5 minutes
↣ 5 minutes = 5/60 hrs
Finding the speed:
↣ Speed = (960/1000) / (5/60) km/hr
↣ Speed = (960 × 60) / (5 × 1000) km/hr
↣ Speed = 11.52 km/hr
Q.3) A man runs at the speed of 10 km/hr. how much time will he take to cover 750 metres?
We have:
- Speed = 10 km/hr
- Distance = 750 m
↣ 750 m = 750/1000 = 0.75 km
Finding the time:
↣ Time = 0.75/10
↣ Time = 0.075 hrs
Q.4) Aaron ran 500 metres in 100 seconds. Find the speed in km per hour.
We have:
- Distance = 500 m
↣ 500 m = 500/1000 km
- Time = 100 seconds
↣ 100 seconds = 100/3600 hrs
Finding the speed:
↣ Speed = (500/1000) / (100/3600) km/hr
↣ Speed = (500 × 3600) / (100 × 1000) km/hr
↣ Speed = 18 km/hr
Given :-
(1) Distance = 720 km
Speed = 60 km/h
(2) Distance = 960 m
Time = 5 min
(3) Speed = 10 km/h
Distance = 750
(4) Distance = 500 m
Time = 100 sec
To Find :-
(1) Time
(2) Speed in km/h
(3) Time
(4) Speed in km/h
Solution :-
(1)
Time = Distance/Speed
Time = 720/60
Time = 72/6
Time = 12 hours
(2)
Distance in km = 960/1000 = 96/100 km
Time in hours = 5/60 = 1/12 hours
Now
Speed = Distance/Time
Speed = (96/100)/(1/12)
Speed = 96/100 × 12/1
Speed = 11.52 km/h
(3)
1 km = 1000 m
750 m = 750/1000 = 0.75 km
Time = Distance/Speed
Time = 0.75/10
Time = 75/1000
Time = 0.075 hours
1 hours = 3600 sec
Time (in sec) = 0.075 × 3600
Time (in sec) = 270 sec
(4)
Speed in (m/s) = 500/100
Speed in (m/s) = 5 m/s
Now
5/18 m/s = 1 km/h
18/5 × 5 km/h
18 km/h