Calculate how long it took King Kong to fall straight down from the top of the Empire State Building (380 m high). What was his velocity just before "landing"? [8.81 s; 86.3 m/s]

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)...
icon
Related questions
Question
100%
please help me do number 2,3 and 4 am having a hard time
Free-fall Practice Problems
Name
1) A stone is dropped from the top of a cliff. It is seen to hit the ground below after 3.50 s.
How high is the cliff? [60.0 m]
2) Calculate how long it took King Kong to fall straight down from the top of the Empire State
Building (380 m high). What was his velocity just before "landing"? [8.81 s; 86.3 m/s]
3) A car rolls gently (vo = 0) off a vertical cliff. How long does it take to reach a speed of
90 km/hr? [2.6 s]
4) A foul ball is hit straight up into the air with a speed of 25 m/s. (a) How high does it go?
[31.9 m] (b) How long is it in the air, that is, how long does it take to go up and come back
down again? [5.1 s]
5) A ball is thrown vertically downward with a velocity of 15 m/s from the roof of a building
that is 22 m high. How long does it take to hit the ground below? How fast was it going
when in hit? [1.08 s; 25.6 m/s]
6) A ball is thrown vertically upward with a velocity of 15 m/s from the roof of a building that
is 22 m high. How long does it take to hit the ground below? How fast was it going when in
hit? [4.14 s; 25.6 m/s]
ype here to search
Transcribed Image Text:Free-fall Practice Problems Name 1) A stone is dropped from the top of a cliff. It is seen to hit the ground below after 3.50 s. How high is the cliff? [60.0 m] 2) Calculate how long it took King Kong to fall straight down from the top of the Empire State Building (380 m high). What was his velocity just before "landing"? [8.81 s; 86.3 m/s] 3) A car rolls gently (vo = 0) off a vertical cliff. How long does it take to reach a speed of 90 km/hr? [2.6 s] 4) A foul ball is hit straight up into the air with a speed of 25 m/s. (a) How high does it go? [31.9 m] (b) How long is it in the air, that is, how long does it take to go up and come back down again? [5.1 s] 5) A ball is thrown vertically downward with a velocity of 15 m/s from the roof of a building that is 22 m high. How long does it take to hit the ground below? How fast was it going when in hit? [1.08 s; 25.6 m/s] 6) A ball is thrown vertically upward with a velocity of 15 m/s from the roof of a building that is 22 m high. How long does it take to hit the ground below? How fast was it going when in hit? [4.14 s; 25.6 m/s] ype here to search
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps with 1 images

Blurred answer
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
College Physics
College Physics
Physics
ISBN:
9781305952300
Author:
Raymond A. Serway, Chris Vuille
Publisher:
Cengage Learning
University Physics (14th Edition)
University Physics (14th Edition)
Physics
ISBN:
9780133969290
Author:
Hugh D. Young, Roger A. Freedman
Publisher:
PEARSON
Introduction To Quantum Mechanics
Introduction To Quantum Mechanics
Physics
ISBN:
9781107189638
Author:
Griffiths, David J., Schroeter, Darrell F.
Publisher:
Cambridge University Press
Physics for Scientists and Engineers
Physics for Scientists and Engineers
Physics
ISBN:
9781337553278
Author:
Raymond A. Serway, John W. Jewett
Publisher:
Cengage Learning
Lecture- Tutorials for Introductory Astronomy
Lecture- Tutorials for Introductory Astronomy
Physics
ISBN:
9780321820464
Author:
Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina Brissenden
Publisher:
Addison-Wesley
College Physics: A Strategic Approach (4th Editio…
College Physics: A Strategic Approach (4th Editio…
Physics
ISBN:
9780134609034
Author:
Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher:
PEARSON