Posted by **Laura** on Wednesday, August 17, 2011 at 9:26pm.

A bus accelerates at 1.4 m/s2 from rest for 10 s. It then travels at constant speed for 26 s, after which it slows to a stop with an acceleration of magnitude 1.4 m/s2.

(a) What is the total distance that the bus travels?

(b) What was its average velocity?

- physics -
**bobpursley**, Wednesday, August 17, 2011 at 9:52pm
distance=1/2*1.4*10^2 + 1.4*10*26+ gets you the distance till it starts to brake.

Now to deaccelerate from that velocity, it takes 10 sec (think on that).

distance braking= vi*t-1/2 a t^2 or

1.4*10*10-1/2 1.4 10^2=70m

add that to the above distance.

avg velocity= distance/total time=totaldistance/(10+26+10)

## Answer This Question

## Related Questions

- physics - A bus accelerates at 2.4 m/s2 from rest for 10 s. It then travels at ...
- physics - A bus accelerates at 1.4 m/s2 from rest for 14 s. It then travels at ...
- physics - A bus accelerates from rest at 1.5m/s^2 for 12s. It then travels for ...
- Physics - A bus starts from rest at a bus stop and accelerates at a rate of 1.12...
- physics - 1.The speed of a train increased from 15 mi/hr to 25 mi/hr in a ...
- Physics - an ambulance starts its motion from rest at a hospital and ...
- AP Physics - Jack is 12m from the bus and is running towards the bus at a ...
- Physics? clueless on what to do - Jack is 12m from the bus and is running ...
- physics - A sprinter starts from rest and accelerates for 5s. He then travels at...
- AP Physics - 1. A car is traveling down the road at a constant speed of 11 km/h...

More Related Questions