answer with steps please
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ʜᴇʟʟᴏ ᴍᴀᴛᴇ!
So, first 30 km covered by an object with speed of 60 km/h
Next 30 km with speed of 40 km/h
As we know that speed = distance / time
60 = 30 / t1
t1 = 30/60 or 0.5 h
40 = 30 / t2
t2 = 30/40 or 0.75 h
Answer (i) = total time = 0.75 h + 0.5 h = 1.25 hrs
Average speed = Total distance / total time
= ( 30 + 30 ) km / ( 1.25 ) h
= 60 / 125 × 100
= 60 / 25 × 20 = 60 / 5 × 4 = 12*4 = 48 km/h
Hope it helps
So, first 30 km covered by an object with speed of 60 km/h
Next 30 km with speed of 40 km/h
As we know that speed = distance / time
60 = 30 / t1
t1 = 30/60 or 0.5 h
40 = 30 / t2
t2 = 30/40 or 0.75 h
Answer (i) = total time = 0.75 h + 0.5 h = 1.25 hrs
Average speed = Total distance / total time
= ( 30 + 30 ) km / ( 1.25 ) h
= 60 / 125 × 100
= 60 / 25 × 20 = 60 / 5 × 4 = 12*4 = 48 km/h
Hope it helps
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abhi104324:
thanks friend
Always welcome dear
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