Abdul while driving to school computes average speed for his trip to be 20 kilometre per hour on his return trip along the see road , there is less traffic and the average speed is 30km per hour what is the average speed of his trip
Answers
Answered by
5
here is ur answer
Plz mark as brainlist.
Plz mark as brainlist.
Attachments:
shiva006:
all units must be in km/h
Y'all but the unit of speed is m/s too
I hope u get it
if the question is given in km/h then to convert it into m/s you must multiply it with 5/18
I know that. But will explain me that what u exactly want to say. By the way the answer in m/s is too accurate
I get that what u want to say me
That's my mistake I'm sorry
Answered by
3
average speed is total distance by total time.
let us assume total distance to be D. so distance travelled on a whole is 2D.
time=D/s. so time for first travel is D/20.
time for second travel back is D/30.
so, AVG SPD =2D/D/30+D/20.
therefore AVG SPD=2D/D(1/30+1/20)
=2/1/30+1/20
=2×60/5
=24km/h
HOPE THIS HELPS YOU
let us assume total distance to be D. so distance travelled on a whole is 2D.
time=D/s. so time for first travel is D/20.
time for second travel back is D/30.
so, AVG SPD =2D/D/30+D/20.
therefore AVG SPD=2D/D(1/30+1/20)
=2/1/30+1/20
=2×60/5
=24km/h
HOPE THIS HELPS YOU
Mr. m/s is too the unit of speed search on Google dear
but the question is asked in km/h dear
Similar questions