QR Challenge: WORK

Created using the ClassTools QR Treasure Hunt Generator

Teacher Notes

A. Prior to the lesson:

1. Arrange students into groups. Each group needs at least ONE person who has a mobile device.

2. If their phone camera doesn't automatically detect and decode QR codes, ask students to

• Download a QR reader (e.g. I-Nigma | NeoReader | Kaywa) onto their mobile devices
• Bring these devices into the lesson.

3. Print out the QR codes.

4. Cut them out and place them around your class / school.

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B. The lesson:

1. Give each group a clipboard and a piece of paper so they can write down the decoded questions and their answers to them.

2. Explain to the students that the codes are hidden around the school. Each team will get ONE point for each question they correctly decode and copy down onto their sheet, and a further TWO points if they can then provide the correct answer and write this down underneath the question.

3. Away they go! The winner is the first team to return with the most correct answers in the time available. This could be within a lesson, or during a lunchbreak, or even over several days!

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C. TIPS / OTHER IDEAS

4. A detailed case study in how to set up a successful QR Scavenger Hunt using this tool can be found here.

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Questions / Answers (teacher reference)

Question	Answer
1. 55, 000J of work is done to move a rock 25m - how much force was applied?	1375000 J
2. How much work is done by a person who uses a force of 27.5N to move a grocery buggy 12.3m?	338.25J
3. A balloon floats a 100 kg gondola upward with acceleration 1.2 (m/s2) so what force is on the gondola?	120 KG M/S^2
4. You and 3 friends apply a combined force of 489.5N to push a piano so the amount of work done is 1762.2J - what distance did the piano move?	3.6M
5. Calculate the amount of work done when moving a 567N crate a distance of 20 meters.	11340 N-M
6. A force of 20 N acts upon a 5 kg block - calculate the acceleration of the object.	4 M/S^2
7. If it took a bulldozer 567.6 joules of work to push a mound of dirt 30.5 meters, how much force did the bulldozer have to apply?	280.90 N
8. A front-end loader needed to apply 137 newtons of force to lift a rock so a total of 223 joules of work was done. How far was the rock lifted?	1.63 M
9. If a long distance runner with a weight of 596.82 newtons does 35,674.7 joules of work during a portion of a race, what distance will she cover during that portion?	59.77 M
10. If a weight lifter raises a barbell with a mass of 125.7 grams doing 5,023 joules of work, what distance did he move the barbells?	4073 M
11. Children are sled riding on a hill and one little girl pulls her sled back up the hill and does 379.5 joules of work while pulling it back up the 17.3 meter hill -what amount of force did she exert on the sled?	21.94 N
12. A large semi-truck is moving a house from one lot to another and the amount of force required to move the house horizontally a distance of 73.2 meters is 3,500 newtons - how much work will be done on the house?	256200 J

 

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