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Item X of mass 1.0 kg was dropped from a height of 20.0 m. What is its ACCELERATION?

A BCDEFGHIJKLMNOPQRSTUVWXYZ. Item X of mass 1.0 kg was dropped from a height of 20.0 m. What is its ACCELERATION?. 9.8 m/s 2. A B CDEFGHIJKLMNOPQRSTUVWXYZ. Item X of mass 1.0 kg was dropped from a height of 20.0 m. What is its SPEED just before it hits the ground?. 19.8 m/s.

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Item X of mass 1.0 kg was dropped from a height of 20.0 m. What is its ACCELERATION?

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  1. ABCDEFGHIJKLMNOPQRSTUVWXYZ Item X of mass 1.0 kg was dropped from a height of 20.0 m. What is its ACCELERATION? 9.8 m/s2

  2. ABCDEFGHIJKLMNOPQRSTUVWXYZ Item X of mass 1.0 kg was dropped from a height of 20.0 m. What is its SPEED just before it hits the ground? 19.8 m/s

  3. ABCDEFGHIJKLMNOPQRSTUVWXYZ Item X of mass 1.0 kg was dropped from a height of 20.0 m. What is its MOMENTUM just before impact? 19.8 kg m/s

  4. ABCDEFGHIJKLMNOPQRSTUVWXYZ Item X of mass 1.0 kg was dropped from a height of 20.0 m. How much FORCE acts on it upon impact if impact lasts for 2.0 s? -9.9 N

  5. ABCDEFGHIJKLMNOPQRSTUVWXYZ Item X of mass 1.0 kg was pushed across level ground. Friction is negligible. What is its WEIGHT? 9.8 N

  6. ABCDEFGHIJKLMNOPQRSTUVWXYZ Item X of mass 1.0 kg was pushed across level ground. Friction is negligible. How much FORCE is needed to accelerate it at 2.0 m/s2? 2.0 N

  7. ABCDEFGHIJKLMNOPQRSTUVWXYZ Item X of mass 1.0 kg was pushed across level ground. Friction is negligible. How long does it take to accelerate it from rest to 25 m/s if a = 5.0 m/s2? 5.0 s

  8. ABCDEFGHIJKLMNOPQRSTUVWXYZ Item X of mass 1.0 kg moving at 4.0 m/s  hits Item Y of mass 2.0 kg moving at 2.0 m/s . What is the MOMENTUM of Item X before collision? 4.0 kg m/s

  9. ABCDEFGHIJKLMNOPQRSTUVWXYZ Item X of mass 1.0 kg moving at 4.0 m/s  hits Item Y of mass 2.0 kg moving at 2.0 m/s . What is the MOMENTUM of Item Y before collision? 4.0 kg m/s

  10. ABCDEFGHIJKLMNOPQRSTUVWXYZ Item X of mass 1.0 kg moving at 4.0 m/s  hits Item Y of mass 2.0 kg moving at 2.0 m/s . Velocity of item X after collision is 2.0 m/s . What is the VELOCITY of Item Y? 3 m/s 

  11. ABCDEFGHIJKLMNOPQRSTUVWXYZ Item X of mass 1.0 kg moving at 4.0 m/s  hits Item Y of mass 2.0 kg moving at 2.0 m/s . If Item Y is to stop in 5.0 m after collision, at what rate should it ACCELERATE? -0.90 m/s2

  12. ABCDEFGHIJKLMNOPQRSTUVWXYZ Item X of mass 1.0 kg is placed on a weighing scale in an elevator. The elevator is at rest. What is the READING on the scale? 9.8 N

  13. ABCDEFGHIJKLMNOPQRSTUVWXYZ Item X of mass 1.0 kg is placed on a weighing scale in an elevator. The reading changes to 11.8 N. What is the elevator’s ACCELERATION? 2.0 m/s2

  14. ABCDEFGHIJKLMNOPQRSTUVWXYZ Item X of mass 1.0 kg is placed on a weighing scale in an elevator. The elevator slows down at 2.0 m/s2. What is the reading on the scale? 7.8 N

  15. ABCDEFGHIJKLMNOPQRSTUVWXYZ Item X of mass 1.0 kg is dropped from a height of 10.0 m. Person A located 5.0 m away is running at a constant rate to catch it. How long does it take Item X to reach the ground? 1.4 s

  16. ABCDEFGHIJKLMNOPQRSTUVWXYZ Item X of mass 1.0 kg is dropped from a height of 10.0 m. Person A located 5.0 m away is running at a constant rate to catch it. How fast must Person A be moving to catch Item X? 3.6 m/s

  17. ABCDEFGHIJKLMNOPQRSTUVWXYZ Mass of Item X on Earth and Mass of Item X on the moon. COMPARE. Write: >, <, = or cannot be compared. =

  18. ABCDEFGHIJKLMNOPQRSTUVWXYZ Inertia of Item X on Earth and Inertia of Item X on the moon. COMPARE. Write: >, <, = or cannot be compared. =

  19. ABCDEFGHIJKLMNOPQRSTUVWXYZ Weight of Item X on Earth and Weight of Item X on the moon. COMPARE. Write: >, <, = or cannot be compared. >

  20. ABCDEFGHIJKLMNOPQRSTUVWXYZ Action force and reaction force. COMPARE. Write: >, <, = or cannot be compared. =

  21. ABCDEFGHIJKLMNOPQRSTUVWXYZ Normal force and weight when an object is at rest on the ground. COMPARE. Write: >, <, = or cannot be compared. =

  22. ABCDEFGHIJKLMNOPQRSTUVWXYZ Weight and tension when an object is moving down a rope. COMPARE. Write: >, <, = or cannot be compared. >

  23. ABCDEFGHIJKLMNOPQRSTUVWXYZ Applied force and friction when an object is slowing down COMPARE. Write: >, <, = or cannot be compared. <

  24. ABCDEFGHIJKLMNOPQRSTUVWXYZ Total momentum before collision and total momentum after collision. COMPARE. Write: >, <, = or cannot be compared. =

  25. ABCDEFGHIJKLMNOPQRSTUVWXYZ Impulse needed to stop an object and impulse needed to bounce it back. COMPARE. Write: >, <, = or cannot be compared. <

  26. ABCDEFGHIJKLMNOPQRSTUVWXYZ Buoyant force and weight of a floating object. COMPARE. Write: >, <, = or cannot be compared. >

  27. Pointers • Branches of physics • Significant digits • Kinematics • Uniform motion • Accelerated motion • Freefall • Newton’s Laws of Motion • Forces • Free-body diagram • Impulse and Momentum • Conservation of Momentum • Pressure, Archimedes’ and Bernoulli’s Principles • RED MEANS MORE PROBLEM SOLVING!

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