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
4. Cut them out and place them around your class / school.
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!
4. A detailed case study in how to set up a successful QR Scavenger Hunt using this tool can be found here.
Question | Answer |
| 1. A 1500kg car traveling at 15.0 m/s to the south collides with a 4500 kg truck that is initially at rest at a stoplight. The car and truck stick together and move together after the collision. What type of collision and what is the final velocity of the two-vehicle mass? | perfectly inelastic collision 3.8 m/s to the south | 2. A grocery shopper tosses a 9.0 kg bag of rice into a stationary 18.0 kg grocery cart. The bag hits the cart with a horizontal speed of 5.5 m/s toward the front of the cart. What is the final speed of the cart and bag and what type of collision is this? | 1.8 m/s forward, perfectly inelastic collision | 3. A 1.50 x 10^4 kg railroad car moving at 7.00 m/s to the north collides with and sticks to another railroad car of the same mass that is moving in the same direction at 1.5 m/s. What is the velocity of the joined cars after the collision? | 4.25 m/s to the north | 4. A dry cleaner throws a 22 kg bag of laundry onto a stationary 9.0 kg cart. The cart and laundry bag begin moving at 3.0 m/s to the right. Find the velocity of the laundry bag before the collision. | 4.2 m/s to the right | 5. A 47.4 kg student runs down the sidewalk and jumps with a horizontal speed of 4.20 m/s onto a stationary skateboard. The student and skateboard move down the sidewalk with a speed of 3.95 m/s. Find the following: a. the mass of the skateboard b.how fast the student would have to jump to have a final speed of 5.00 m/s. | 3.0kg, 5.32 m/s | 6. A 0.015 kg marble sliding to the right at 22.5 cm/s on a frictionless surface makes an elastic head-on collision with a 0.015 kg marble moving to the left at 18.0 cm/s. After the collision, the first marble moves to the left at 18.0 cm/s. Find the velocity of the second marble after the collision and what type of collision is this? | 22.5 cm/s to the right elastic | 7. A 4.0 kg bowling ball sliding to the right at 8.0 m/s has an elastic head-on collision with another 4.0 kg bowling ball initially at rest. The first ball stops after the collision. Find the velocity of the second ball after the collision. | 8.0 m/s to the right | 8. A dump truck has a mass of 5.50 x 10^5 kg when loaded and 2.30 x 10 ^5 kg when empty. Suppose two such trucks, one loaded and one empty, crash into each other at a monster truck show. The trucks are supplied with special bumpers that make a collision almost perfectly elastic. If the trucks hit each other at equal speeds of 5.00 m/s and the empty truck recoils to the right with a speed of 9.10 m/s, what is the velocity of the full truck after the collision? | 0.89 m/s left |
A 1500kg car traveling at 15.0 m/s to the south collides with a 4500 kg truck that is initially at rest at a stoplight. The car and truck stick together and move together after the collision. What type of collision and what is the final velocity of the two-vehicle mass?&choe=UTF-8
Question 1 (of 8)
A grocery shopper tosses a 9.0 kg bag of rice into a stationary 18.0 kg grocery cart. The bag hits the cart with a horizontal speed of 5.5 m/s toward the front of the cart. What is the final speed of the cart and bag and what type of collision is this?&choe=UTF-8
Question 2 (of 8)
A 1.50 x 10^4 kg railroad car moving at 7.00 m/s to the north collides with and sticks to another railroad car of the same mass that is moving in the same direction at 1.5 m/s. What is the velocity of the joined cars after the collision?&choe=UTF-8
Question 3 (of 8)
A dry cleaner throws a 22 kg bag of laundry onto a stationary 9.0 kg cart. The cart and laundry bag begin moving at 3.0 m/s to the right. Find the velocity of the laundry bag before the collision.&choe=UTF-8
Question 4 (of 8)
A 47.4 kg student runs down the sidewalk and jumps with a horizontal speed of 4.20 m/s onto a stationary skateboard. The student and skateboard move down the sidewalk with a speed of 3.95 m/s. Find the following: a. the mass of the skateboard b.how fast the student would have to jump to have a final speed of 5.00 m/s.&choe=UTF-8
Question 5 (of 8)
A 0.015 kg marble sliding to the right at 22.5 cm/s on a frictionless surface makes an elastic head-on collision with a 0.015 kg marble moving to the left at 18.0 cm/s. After the collision, the first marble moves to the left at 18.0 cm/s. Find the velocity of the second marble after the collision and what type of collision is this?&choe=UTF-8
Question 6 (of 8)
A 4.0 kg bowling ball sliding to the right at 8.0 m/s has an elastic head-on collision with another 4.0 kg bowling ball initially at rest. The first ball stops after the collision. Find the velocity of the second ball after the collision.&choe=UTF-8
Question 7 (of 8)
A dump truck has a mass of 5.50 x 10^5 kg when loaded and 2.30 x 10 ^5 kg when empty. Suppose two such trucks, one loaded and one empty, crash into each other at a monster truck show. The trucks are supplied with special bumpers that make a collision almost perfectly elastic. If the trucks hit each other at equal speeds of 5.00 m/s and the empty truck recoils to the right with a speed of 9.10 m/s, what is the velocity of the full truck after the collision?&choe=UTF-8
Question 8 (of 8)
