Question

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.

Answer 1

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