Homework Help: physics

Posted by Edward on Monday, July 18, 2011 at 12:55am.

a bus is driving through traffic as it makes a number of express stops. the bus drives at a speed of 10 m/s2 for 90 seconds then drives at a speed of 15m/s for 120 seconds before stopping for 30 seconds, then drives at a speed of 5m/s for 60 seconds before stopping for 15 seconds. Find the average speed of the during the trip.

physics - Henry, Monday, July 18, 2011 at 9:14pm
10m/s^2 is acceleration an not speed.
Did you mean 10m/s?

D = 10*90 + 15*120 + 5*60,
D = 900 + 1800 + 300 = 3000m = total distance.

T = 90 + 120 + 30 + 60 + 15 = 315s.

V = D / T = 3000m / 315s = 9.52m/s.

Answer this Question

Related Questions

Maths - There are x people in the bus. When the bus stops y people get off and 6...
Science - The rest stops the driver made are included in the calculations ...
Physics - A 6110-kg bus traveling at 20.0 m/s can be stopped in 24.0 s by gently...
Math - * How many different odd 3-digit numbers can be formed using the digits 1...
science - The bus driver's manager wants to know the average speed at which ...
science - The bus driver's manager wants to know the average speed at which ...
Physichs - A pedestrian is running at his maximum speed of 6.0m/s to catch a ...
Algebra 2 word problem - Just wanted to check to see if these are correct. Thank...
Physics - A passenger on a bus moving with uniform velocity lurches forward when...
physics - You are riding in a school bus. As the bus rounds a flat curve at ...

For Further Reading

First Name:
School Subject:
Answer: