23 Oct 2021
Problem 7
Page 42
Section: MisConceptual Questions
Chapter 2: Describing motion: Kinematics in one dimension
Textbook ExpertVerified Tutor
23 Oct 2021
Given information
- The first ball is dropped from the top of a building.
- The second ball is thrown upward.
- To compare the magnitudes of the balls.
Step-by-step explanation
Step 1.
Determine the correct option.
Freefall (neglecting air resistance) is motion with CONSTANT acceleration, down.
The ball thrown up is in free fall.
The dropped ball is in free fall.
During the whole time of flight, from the moment of release (or launch), up until the moment just before each hit, the ground both balls are in free fall, and the acceleration for both is 
, down.
, down.This eliminates all answers but (c).
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