Help I'm not sure how to do this. Please explain how you got the answer ( because I don't know). I need this for a test.
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Step-by-step explanation:
A.AVERAGE SPEED= DISTANCE/TIME
SO, MEANS 648/9=72
SO 72 KM/HR IS HIS average speed
B . now, for converting kilometre into metre we should know 1 km is equals to 1000 m
SO, SPEED IN M/S=72×1000
=72000M/HR
SO CONVERTING M/HR TO M/S
M/S= 72000/3600
AS 3600 SECONDS ARE IN 1 HOUR
SO SPEED IN M/S =20M/S
C.HE COVERED DISTANCE = TIME × SPEED
TIME GIVEN = 5 HOURS SO,
DISTANCE=5×72=360KM
D. DISTANCE TRAVELLED IN A MINUTE AT SPEED OF 72KM/HR= 72/MINUTES IN AN HOUR
MEANS, 72/60= 1.2 km
PLS MARK BRAINLIEST
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