A question answer community on a mission

to share Solutions for all STEM major Problems.

to share Solutions for all STEM major Problems.

Cant find a problem on ToughSTEM?

0

A person travels by car from one city to another with different constant speeds between pairs of cities. She drives for 40.0 min at 90.0 km/h, 19.0 min at 80.0 km/h, and 40.0 min at 50.0 km/h and spends 25.0 min eating lunch and buying gas. (a) Determine the average speed for the trip. km/h (b) Determine the distance between the initial and final cities along the route. km

Added Mon, 03 Aug '15

Community

1

Add a Comment

Solutions

0

(b) Distance = Velocityx Time

Total distance travelled = (90 km/h)(40/60 h) + (80 km/h)(19/60 h) + (50 km/h)(40/60 h)

= 356/3 km

Total distance travelled = 118.67 km

------------------------------------------------------------------------------------------------------------------------------------

(a) Average speed of trip = Total distance travelled / Total time taken

= (118.67 km)/(40/60 +19/60 +40/60 +25/60)

= 118.67/2.066

Average speed of trip = 57.42 km/h

Added Mon, 03 Aug '15

Community

1

Add a Comment

Add Your Solution!

Close

Click here to

Choose An Image

or

Get image from URL

GO

Close

Back

Add Image

Close

What URL would you like to link?

GO

α

β

γ

δ

ϵ

ε

η

ϑ

λ

μ

π

ρ

σ

τ

φ

ψ

ω

Γ

Δ

Θ

Λ

Π

Σ

Φ

Ω

∫

∮

∞

∝

∇

∴

→

↔

⊆

⊂

∀

∃

∈

∉

∪

∩

∅

Copied to Clipboard

Sign Up

to interact with the community. (That's part of how we ensure only good content gets on ToughSTEM)

OR

OR

ToughSTEM is completely free, and its staying that way. Students pay way too much already.

Almost done!

Please **check your email** to finish creating your account!

Welcome to the Club!

Choose a new Display Name

Only letters, numbers, spaces, dashes, and underscores, are allowed. Can not be blank.

Great! You're all set, .

A question answer community on a mission

to share Solutions for all STEM major Problems.

to share Solutions for all STEM major Problems.

Why

The Purpose

The Purpose

How

The Community

The Community

Give Feedback

Tell us suggestions, ideas, and any bugs you find. Help make ToughSTEM even better.