Physics .. Very easy!!?

A honeybee leaves the hive, flies in a straight line to a flower 5 km away in 20 min, and then takes 20 minutes to return (also in a straight line).

What is the distance?

What is the displacement?

What is the average speed?

What is the average velocity?



If the bee had not flown in a straight line-- but instead with an unknown motion-- to the flower and back, which could not be determined: the average speed or average velocity? Explain.

Physics .. Very easy!!?
10 km

0 km

15 km/hr

0 km/hr



Average speed
Reply:1) distance is already given as 5km one way so total becomes wice hence 10 km



2) displacement is distance between final and initial point, so it has to be zero since the bee stsrted frm the flower and came back!



3)average speed is total distance divided by total time

so total distance is 10 km and total time is 20+20mins = 40mins= 40/60 hrs = 2/3 hrs.

so average speed = 10km/(2/3)hr = 15km/hr



4) displacement is zero so average velocity is 0/20mins = 0



oh since we dont know the distance the bee travells in an unknown path but the displacement is known hence average velcity can be taken out and will be zero in this case. but average speed cant be known since the distance can vary



ok?