Posted by **Anonymous** on Thursday, August 7, 2014 at 2:56am.

a bus travels from one point to another wuth a speed of 40km/h and returns with a speed of 60km/h.what is e average speed and average velocity of the bus?

- physics -
**Damon**, Thursday, August 7, 2014 at 3:01am
since the total displacement vector is zero the average speed is zero.

let i be unit vector from point A to point B

velocity outbound = 40 i

velocity back = -60 i

(40 - 60)/2 = -10

- physics -
**Steve**, Thursday, August 7, 2014 at 5:58am
The average velocity is zero, but the speed is not.

The total distance covered is 2d. The total time taken is

d/40 + d/60 = 5d/120

So, the average speed is 2d/(5d/120) = 48 km/hr

- physics whoops -
**Damon**, Thursday, August 7, 2014 at 10:12am
Whoops, sorry, Steve is right.

## Answer This Question

## Related Questions

- Physics - a bus travels from one point to another wuth a speed of 40km/h and ...
- Math - Devon travels 40 km to Edmonton by car, and then returns by bus. The ...
- math - a bus takes 12 hours to travel the same distance that an airplane travels...
- physics - A non stop bus goes from one station to another at a speed of 54 km/h...
- Physics - The school bus slows from 60km/h to 40km/h when entering the scholl ...
- Algebra! Help needed! - I'm having a little trouble with this problem... Please ...
- math - the distance between town A and town B was 210km. At 9:20pm a bus sets ...
- physics - A bus accelerates at 1.4 m/s2 from rest for 10 s. It then travels at ...
- Physics - In a city with an air-pollution problem, a bus has no combustion ...
- physics - A bus accelerates at 2.4 m/s2 from rest for 10 s. It then travels at ...

More Related Questions