Past Exam for PHYS 111 - PHYS IN MODRN WRLD at Maryland (UMD)

Exam Information

Material Type:Exam 3
University:University of Maryland
  • Immediately
  • Provided That
  • Continued...
  • Behind (of)
  • Acceleration
  • Scientific Theory
  • Constant Velocity
  • You Have...
  • Elastic Collision
  • Professional
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Sample Document Text

PHYS 111 EXAM I David S. Falk October 16, 1989 Please write clearly and legibly in the spaces provided; if I cannot read and understafUi what you have written, I will assume that it is wrong. Clearly drawn and well-labeled diagrams may help. Print your name ______________________ _ I. (35 points) 1. When a ball player throws a ball straight up, in the absence of air resistance, a) by how much does the speed of the ball decrease each second while ascending? b) By how much does it increase each second while descending? c) How much time is required for rising compared to falling? 2. Since the moon is gravitationally attracted to the earth, why doesn't it simply crash into the earth? 3. Your empty hand is not hurt when it bangs lightly against a wall. Why is it hurt if it does so while carrying a heavy load? 2 4. The gravitational force on the moon is only 1/6 that of the gravitational force on the earth. a) What would be the weight of a IO-kg object on the earth? b) What w...

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