• Introduction
• Work
• Power
• Review & Tasks

As we take our bus trip across we will see many types of machines to carry people and cargo across the country. Some machines are built for speed, some for power, some for cargo, and some for people. There are many different types of engines, motors and machines to help people do work by lifting, moving and hauling. Look at the pictures of machines below and place them in the categories of speed, cargo capacity and passenger capacity.

1	2
Image courtesy of flickr user elavats. This image is protected by a Creative Commons Attribution-Noncommercial 2.0 Generic license.	Image courtesy of flickr user Telstar Logistics. This image is protected by a Creative Commons Attribution-Noncommercial 2.0 Generic license.
3	4
Image courtesy of flickr user Mr. Thomas. This image is protected by a Creative Commons Attribution-Noncommercial 2.0 Generic license.	Image courtesy of flickr user jagian. This image is protected by a Creative Commons Attribution 2.0 Generic license.
5	6
Image courtesy of flickr user srqpix. This image is protected by a Creative Commons Attribution 2.0 Generic license.	Image courtesy of flickr user dizzychoonz. This image is protected by a Creative Commons Attribution-Noncommercial 2.0 Generic license.

You may want to set up a table such as the one below:

Photo	Type of vehicle	Speed	Cargo Capacity	Passenger capacity
1	.	.	.	.
2	.	.	.	.
3	.	.	.	.
4	.	.	.	.
5	.	.	.	.
6

Then, answer the following questions:

1. How is work determined?

2. How much work is done if a 10 N force pushes a box 5 meters up a ramp?

3. What is the definition of power?

4. What is the power used if 100 J of work is done in 5 seconds?

5. A crane lifts a 10 N box 50 meters into the air to place it on the deck of a ship. How much work is done?

6. If it takes the crane in problem five 20 seconds to lift the box to the deck. How much power is used?

Submit your work to the 1.04 Modes of Travel Dropbox.