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Comparing computation of velocity of puck at .3s to the velocity depicted in the graph. The graph of displacement on ramp (m) vs. time (s) has a slope of 6.4 m/s. This means that the velocity across time according to Pivot should be about 6.4 m/s at .3s. My computation, however, states that the velocity is 7.7 m/s at .3s.

Here are some reasons for this difference:

1. Air resistance would produce a significant difference between the average velocity of the block, calculated by measuring the slope of the position vs time graph of the block, and the instantaneous velocity of the block at .3s. This is because the average velocity of the block would reflect the total distance that the block traveled, divided by its time of travel. As the block travels, however, it is decelerating due to the force of air resistance opposing its motion. As a result, the average velocity of the block would be lower than its instantaneous velocity at the very beginning of its descent.

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Break projectile motion into x‐ and y‐components (15)

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At .1s, the vertical displacement measured via pivot interactive lab is -1.2 m whereas I calculated -.049 m. This difference can be attributed to the following reasons:

1. Thrust force: In the actual experiment, the thrust force of the aerodynamic block significantly affected the vertical height of the block, by providing a force adding to the motion of the block. However, this was neglected by my calculations because, thrust force was considered negligible by the lab. This would make my calculated vertical distance lower than the actual vertical distance.

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-Use kinematics equation #1 (30)
-Use kinematics equation #2 (15)

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-Draw a Free Body Diagram of an object on an incline (5)
-Use sum of F = 0 and axes correctly (5)
-Use sum of F = ma and axes correctly (5)
-State a Newton’s 3rd Law Pair in your scenario (5 pts): For every action, there is an equal and opposite reaction. The vertical component of the force of gravity is counteracted by the normal force. This allows the block to stay on the incline. The magnitude in both directions is equal (-.095N), so the forces cancel out in the y-direction.

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Use sine, cosine, tangent to find missing pieces of triangles (5)

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-y-displacement (5)
-initial velocity (5)
-final velocity (10) **used twice
-a, acceleration (5)
-g, acceleration due to gravity (5)

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In this section, I have the following calculations:

-Fg, Forces of Gravity (5)
-Ff, Friction (kinetic) (5)
-𝜇k, coefficient of kinetic friction (5)

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Vertical Displacement (5):

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Horizontal Displacement (5):

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Using the Pivot Interactive software, I uploaded the video of my experiment to measure horizontal, vertical, and incline displacement.

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Displacement along an Inclined Ramp (5) and Time (5):

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Angle (5): I used my protractor to measure the angle at the meeting point of the edge of the mirror and the floor. This angle was measured to be 65 degrees.

Mass: I used my scale to measure the mass of the block, which is 0.023 kg.

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This is the setup I used using my available materials

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Materials:
- Mirror:
- Smooth block

Measuring Tools:
- Meter stick
- Protractor
- Stopwatch
- scale (measures in grams)