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QR Challenge: Momentum Review

Created using the ClassTools QR Treasure Hunt Generator

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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

3. Print out the QR codes.

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

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!

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.

Questions / Answers (teacher reference)

Question

Answer

1. What is the momentum of a ball that has a mass of 4kg and is rolling at a speed of 3m/s? 12kgm/s
2. What is the mass of a person that is travelling at 15m/s with a momentum of 50kgm/s? 3.33kg
3. What is the speed of a ball that has a momentum of .1kgm/s and a mass of 2kg? .05m/s
4. True of False In a closed system with two objects, the loss of momentum of one equals the gain in momentum of the other object. True
5. A 6000kg railroad car moving at 10m/s collides into a 4000kg railroad car at rest. If they couple after the collision what is their velocity? 6m/s
6. The muzzle velocity of a .05kg shell is 500m/s. If the rifle has a mass of 3kg what is the recoil velocity of the gun? 8.33m/s
7. A 3500kg truck moving rightward with a speed of 5km/hr collides with a 1000kg car moving left with a speed of 12km/hr. If the two vehicles bounce apart and the truck has a velocity of 4km/hr. What is the speed of the car?15.5m/s
8. An 80kg girl is standing on the ice. She throws a 4kg ball forward at 6m/s. What speed does the girl move backwards?.3m/s
9. A 4kg blob of putty moving at 4m/s slams into a 10kg blob at rest. What is the speed of the two stuck together?1.14m/s
10. What is the mass of a person that is travelling at 15m/s with a momentum of 80kgm/s?5.33kg
11. A 4kg ball travels at 25m/s hits a 15kg ball at rest. If the 4kg ball bounces away at 8m/s. What is the speed of the 15kg ball?4.53m/s

 


Momentum Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=What_is_the_momentum_of_a_ball_that_has_a_mass_of_4kg_and_is_rolling_at_a_speed_of_3m/s?

Question 1 (of 11)

 


Momentum Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=What_is_the_mass_of_a_person_that_is_travelling_at_15m/s_with_a_momentum_of_50kgm/s?

Question 2 (of 11)

 


Momentum Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=What_is_the_speed_of_a_ball_that_has_a_momentum_of_.1kgm/s_and_a_mass_of_2kg?

Question 3 (of 11)

 


Momentum Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=True_of_False_In_a_closed_system_with_two_objects,_the_loss_of_momentum_of_one_equals_the_gain_in_momentum_of_the_other_object.

Question 4 (of 11)

 


Momentum Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=A_6000kg_railroad_car_moving_at_10m/s_collides_into_a_4000kg_railroad_car_at_rest._If_they_couple_after_the_collision_what_is_their_velocity?

Question 5 (of 11)

 


Momentum Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=The_muzzle_velocity_of_a_.05kg_shell_is_500m/s._If_the_rifle_has_a_mass_of_3kg_what_is_the_recoil_velocity_of_the_gun?

Question 6 (of 11)

 


Momentum Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=A_3500kg_truck_moving_rightward_with_a_speed_of_5km/hr_collides_with_a_1000kg_car_moving_left_with_a_speed_of_12km/hr._If_the_two_vehicles_bounce_apart_and_the_truck_has_a_velocity_of_4km/hr._What_is_the_speed_of_the_car?

Question 7 (of 11)

 


Momentum Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=An_80kg_girl_is_standing_on_the_ice._She_throws_a_4kg_ball_forward_at_6m/s._What_speed_does_the_girl_move_backwards?

Question 8 (of 11)

 


Momentum Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=A_4kg_blob_of_putty_moving_at_4m/s_slams_into_a_10kg_blob_at_rest._What_is_the_speed_of_the_two_stuck_together?

Question 9 (of 11)

 


Momentum Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=What_is_the_mass_of_a_person_that_is_travelling_at_15m/s_with_a_momentum_of_80kgm/s?

Question 10 (of 11)

 


Momentum Review: QR Challenge

https://www.classtools.net/QR/decode.php?text=A_4kg_ball_travels_at_25m/s_hits_a_15kg_ball_at_rest._If_the_4kg_ball_bounces_away_at_8m/s._What_is_the_speed_of_the_15kg_ball?

Question 11 (of 11)