Two rocks of masses 5kg and 10kg are dropped off a cliff at the same time.  1.  Which rock will hit the ground first? a)5kg rock b)10kg rock c) they will hit at the same time   Justify your answer.    2.  One of the rocks is now dropped from twice the original height (2H).  How does the time it takes to hit the ground (t2) compare to the original time (t1)? a) t2 = 2t1         b) t2 <2t1          c) t2 > 2t1   Justify your answer.

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Two rocks of masses 5kg and 10kg are dropped off a cliff at the same time. 

1.  Which rock will hit the ground first?

a)5kg rock

b)10kg rock

c) they will hit at the same time

 

Justify your answer. 

 

2.  One of the rocks is now dropped from twice the original height (2H).  How does the time it takes to hit the ground (t2) compare to the original time (t1)?

a) t2 = 2t1        

b) t2 <2t1         

c) t2 > 2t1

 

Justify your answer. 

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