University:
California State University, Northridge
Course:
COMP 110 | Introduction to Algorithms and Programming and Lab
Academic year:

2024
Views:

41

Pages:

7
Author:

Andrea Jensen

1. Anya and the Wishing Well Given: Time = 2.6 s Gravity = 9.8 m/s² Find: ● How deep the well is ● How fast the stone hits the water Work: Use: Use: Answer: ● The well is 33.1 m deep ● The stone hits the water at 25.5 m/s 2. Cannon Ball Launch A & B: Time to Highest Point and Height Given: Start speed = 100 m/s End speed at top = 0 m/s Gravity = -9.8 m/s² Find: ● Time to reach the top ● Maximum height Work: Answer: ● Time to top = 10.2 s ● Height = 510 m C & D: Time to Come Down and Speed When It Hits Ground ● Time to come down = same as up = 10.2 s ● Total time in air = 20.4 s ● Final speed = 100 m/s [down] 3. Micah’s Dive Given: Final speed = 20 m/s Start speed = 0 Gravity = 9.8 m/s² Find: ● Max height he can dive from Work: Answer: Micah must dive from 20.4 m or less 4. Malcolm and James – Rock Drop Malcolm: Given: Height = 30 m Start speed = 0 Gravity = 9.8 m/s² Find: ● Time to hit water Work: James: James throws his rock 1.0 s later Time left = 2.47 – 1 = 1.47 s Find: ● How fast James must throw the rock Work: Answer: James must throw his rock at 13.2 m/s down 5. Racecar Accelerating Given: Start speed = 200 km/h = 55.56 m/s Time = 8.0 s Acceleration = 5.0 m/s² Find: ● Distance travelled Work: Answer: The car goes 605 m 6. Car Starts from Rest Given: Start speed = 0 Distance = 50 m Time = 6.0 s Find: ● Final speed ● Acceleration Work: Answer: ● Final speed = 16.7 m/s ● Acceleration = 2.78 m/s² 7. Cyclist Accelerates Given: Start speed = 5.6 m/s Acceleration = 0.60 m/s² Time = 4.0 s Find: ● Distance ● Final speed Work: Answer: ● Distance = 27.2 m ● Final speed = 8.0 m/s 8. Truck Slows Down Given: Start speed = 22 m/s Final speed = 14 m/s Distance = 125 m Find: ● Time ● Acceleration Work: Answer: ● Time = 6.94 s ● Acceleration = –1.15 m/s² 9. Arrow on Bow Given: Distance = 0.75 m Start speed = 0 Final speed = 75 m/s Find: ● Acceleration Work: Answer: Acceleration = 3750 m/s² 10. Rocket-Powered Car Given: Acceleration = 4.0 m/s² Time = 8.0 s Distance = 224 m Find: ● Speed when rockets started Work: Answer: Starting speed = 12 m/s