Group 3 lab experiments
- 2. Welcome to Group 3 Reporting Experiments
- 3. Lab Experiment #1 Roll, roll and away!
- 4. Lab Experiment #1 Roll, roll and away! Distance Time Time² Trial 1 Trial 2 Trial 3 Average 40 cm 0.13 s 0.52 s 0.53 s 0.39 s 0.15 s 80 cm 0.73 s 0.79 s 0.78 s 0.77 s 0.59 s 120 cm 1.11 s 0.79 s 0.91 s 0.94 s 0.88 s 160 cm 1.31 s 1.25 s 1.31 s 1.29 s 1.66 s 200 cm 1.50 s 1.37 s 1.31 s 1.39 s 1.94 s Gathered Data Angle of Inclination: 30 ° Curious?? Lab Experiment #1 Roll, roll and away!
- 5. 0 0.5 1 1.5 2 2.5 40 cm 80 cm 120 cm 160 cm 200 cm Average Time Time Squared Lab Experiment #1 Roll, roll and away! Data Graph of Time and Time squared
- 6. Guide Question: What is the average speed? Speed= 𝑑𝑖𝑠𝑡𝑎𝑛𝑐𝑒 𝑡𝑖𝑚𝑒 Average Speed= Σ 𝑠𝑝𝑒𝑒𝑑 𝑠𝑎𝑚𝑝𝑙𝑒𝑠 𝑁𝑜 𝑜𝑓 𝑠𝑎𝑚𝑝𝑙𝑒𝑠 S1=1.43 m/s S2=1.24 m/s S3=1.28 m/s S4=1.04 m/s S5=1.01 m/s Average Speed= 𝑆1+𝑆2+𝑆3+𝑆4+𝑆5 5 Average Speed= 120 𝑚 5 𝑠 Average Speed= 1.20 𝑚/𝑠 Lab Experiment #1 Roll, roll and away!
- 7. Guide Question: 1. How will you describe the graphs of distance vs time and distance vs time squared? Ans: It was a slant line from low to higher direction. 2. Relationship between distance and time travel of the rolling can? Ans: distance and time travel are directly proportianal. 3. Slope of d vs. T ^2 graph? What quantity it represent? Ans: slanting, it represent the acceleration;m/s^2 Lab Experiment #1 Roll, roll and away! Want to see Graph again?
- 8. Guide Question: 4. What do the graph suggests? The graph suggest that tin cans speeding uniformly in different distances. Lab Experiment #1 Roll, roll and away!
- 9. Conclusion: With our gathered data, experiments show that distance, time, speed and acceleration are having a relationship. Whatever the distance speed are still uniform, and Speed = Distance/Time Time = Distance/Speed Distance = Speed × Time Lab Experiment #1 Roll, roll and away!
- 10. One experiment has been done reporting!
- 11. Lab Experiment #2 Drop Me! The pull of gravity acts on all objects. So the earth when you throw up it will go down.Things thrown upward always fall a constant of 9.8 m/s this means that the velocity of an object in free fall changes by 9.8 m/s every second of fall.
- 12. Trials Time Height 1 2.81 s 38.69 m 2 1.85 s 16.77 m 3 1.61 s 12.70 m Average 2.09 s 21.40 m Gathered Data Curious?? Lab Experiment #2 Drop Me! Actual height: 11.36 m
- 13. Tasks Lab Experiment #2 Drop Me! Actual height: 11.36 m 3. Calculate the height H=1/2(9.8m/s)(t^2)=21 m 4. Calculate the final velocity Final Velocity=√2(9.8m/s)h=21 m/s 5. Measure the actual height. Actual height=11.36 m
- 14. Guide Question: Lab Experiment #2 Drop Me! Actual height: 11.36 m 1. What is the velocity of the ball before hitting ground? Ans: 21 m/s using final velocity formula. 2. Comparison of the actual height and experiment result? Ans: Experiment result having a large gap in assumption of delay time record 3. What is the percentage error? Ans: PE=((Actual height-experimental height)/actual height)100 = 88% error
- 15. Lab Experiment #2 Drop Me! Conclusions: Using formulas and data, we can say the velocity of the ball is increasing start from zero then ends up in 21 m/s proportionally in upward and downward. Related to experiment No. 3 when the ball become free fall its still the same velocity in same point release the ball. Lab Experiment #2 Drop Me!
- 16. Lab Experiment #3 You Raise Me Up! As the ball goes up, It decelerates with 9.8m/s². Until it stop momentarily and change direction means it reaches its maximum height before it start to fall. The magnitude of two velocities are equal but they have 2 direction indicate as + for upward and – for downward.
- 17. Lab Experiment #3 You Raise Me Up! Trials Total Time One way Time 1 3.35 s 1.68 s 2 3.20 s 1.6 s 3 3.18 s 1.59 s Average 3.24 s 1.62 s Gathered Data Lab Experiment #3 You Raise Me Up!
- 18. Lab Experiment #3 You Raise Me Up! Initial Velocity Lab Experiment #3 You Raise Me Up!
- 19. Lab Experiment #3 You Raise Me Up! Maximum Height Lab Experiment #3 You Raise Me Up!
- 20. Lab Experiment #3 You Raise Me Up! Trials Velocity Height 1 -16.42 m/s 41.24 m 2 -15.68 m/s 37.63 m 3 -15.58 m/s 37.16 m Average -15.89 m/s 38.58 m Gathered Data: Table 4 Lab Experiment #3 You Raise Me Up!
- 21. Guide Question: 1. What do you think will happen to the speed of the ball as it reaches it’s maximum height? Ans: At maximum height it will fall on zero then suddenly increasing downward. 2. What will happen to the balls velocity as it falls further below the point of release point? Ans: It will have an equal velocity in same point then increasing downward. Lab Experiment #3 You Raise Me Up!
- 22. Lab Experiment #3 You Raise Me Up! Conclusion Due to air resistance, gravity when the ball reach maximum height it momentarily stops then change its direction going backward with a speed of reverse sequence. Lab Experiment #3 You Raise Me Up!
- 25. Thank You For Listening!!
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