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Motion Review: Displacement, Acceleration, and Graphs

This review unit focuses on understanding motion maps, displacement, and acceleration for various objects in motion. It covers scenarios involving a car accelerating from rest, calculating its displacement and speed over time, and analyzing a train's velocity changes and corresponding motion graphs. Additionally, it explores projectile motion with an arrow, determining its maximum height and time in the air. Questions encourage critical thinking about displacement, acceleration, and graph interpretation, consolidating knowledge of basic physics principles.

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Motion Review: Displacement, Acceleration, and Graphs

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  1. Unit Three Test Review Good Luck!

  2. Sketch a motion map of object A x B A t

  3. Which object has a greater displacement at 3 seconds? x B A t 3 s Both objects have the same displacement.

  4. Which object has a greater acceleration and why? x B A t 3 s Object A because it has a changing velocity.

  5. A car starts from rest and accelerates to 15 m/sec over a time of 10 seconds. Make a motion map!

  6. A car starts from rest and accelerates to 15 m/sec over a time of 10 seconds. Draw the velocity vs time graph! v t

  7. A car starts from rest and accelerates to 15 m/sec over a time of 10 seconds. Calculation the acceleration v Acceleration = 1.5 m/s/s t

  8. A car starts from rest and accelerates to 15 m/sec over a time of 10 seconds. How far does the car travel? v Displacement = 75 m t

  9. A train traveling at 30 m/sec slows to 10 m/sec in 10 seconds. It then travels at that speed for another 20 seconds. Make velocity vs. time graph for the motion. v (m/s) 30 20 10 t (sec) 5 10 15 20 25 30

  10. What is the acceleration of the train while it is slowing down? v (m/s) 30 20 10 t (sec) 5 10 15 20 25 30

  11. What is the displacement of the train during the 30 seconds it is in motion. Δx = Area = 400 m v (m/s) 30 20 10 t (sec) 5 10 15 20 25 30

  12. A train going 25 m/sec slams on its breaks and comes to a stop in 87 seconds. What is the acceleration of the train? a = - 0.29 m/s/s

  13. A train going 25 m/sec slams on its breaks and comes to a stop in 87 seconds. How far does it travel when coming to a stop? x = 1087.5 m

  14. An arrow is fired up with an initial velocity of 18 m/sec. What is the acceleration at the highest point? a = -9.8 m/s/s

  15. An arrow is fired up with an initial velocity of 18 m/sec. How high does the arrow fly? Xf = 16.5 m

  16. An arrow is fired up with an initial velocity of 18 m/sec. What is the total time the arrow is in the air. t = 3.68 sec

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