4. A running man crosses a bridge of length 500 meters in 4 minutes. At what speed he is run
O 7.5 km/s
O 7 km/s
O 5 km/s
6 km/s
Answers
Answered by
1
Answer:
5 kilometres per second
Answered by
0
Step-by-step explanation:
WE KNOW 1KM = 1000M
SO 500M = 500/1000 KM = 1/2KM
ALDO 1 Hour = 60 MIN
4 MIN = 4/60 = 1/15 HOUR
SPEED OF MAN = DISTANCE/TIME
= 1/2KM /
= 1/2×1/15
= 1/2 × 15
= 7.5 KM/HR
YOUR OPTIONS ARE WRONG. THE SPEED SHOULD BE IN HOUR IF IT IS 7.5 KM/HR
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