3. Completely answer the following questions. a. A person is pushing a block across a flat frictionless surface. By applying one of Newton's laws, describe what the motion of the block will be once the person stops pushing the block. Ignore air drag. b. What two properties does a vector (such as velocity) have? c. What does it mean to say that a quantity is conserved? Segtudeot d. Which object requires more heat to raise its temperature 1°C; a 1 kg block of copper (c=390 J/kg-°C), a 1 kg block of lead (c=130 J/kg-°C), or a 1 kg block of aluminum (c=900 J/kg.°C)? Briefly justify your answer. e. An ice skater pushes on the wall surrounding the ice rink and starts to move backwards. Using Newton's 3rd law, explain why the skater moves.

3. Completely answer the following questions. a. A person is pushing a block across a flat frictionless surface. By applying one of Newton's laws, describe what the motion of the block will be once the person stops pushing the block. Ignore air drag. b. What two properties does a vector (such as velocity) have? c. What does it mean to say that a quantity is conserved? Segtudeot d. Which object requires more heat to raise its temperature 1°C; a 1 kg block of copper (c=390 J/kg-°C), a 1 kg block of lead (c=130 J/kg-°C), or a 1 kg block of aluminum (c=900 J/kg.°C)? Briefly justify your answer. e. An ice skater pushes on the wall surrounding the ice rink and starts to move backwards. Using Newton's 3rd law, explain why the skater moves.

Inquiry into Physics

8th Edition

ISBN:9781337515863

Author:Ostdiek

Publisher:Ostdiek

Chapter5: Temperature And Heat

Section: Chapter Questions

Problem 24Q

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