A red ball is dropped from rest at a height of 6.20 m. A blue ball at a height of 10.1 m is thrown down at the same instant at 6.00 m/s. How long does it take the blue ball to catch up with the red ball? 2) An arrow is shot straight up in the air at an initial speed of 30.0 m/s. After how much time is the arrow heading downward at a speed of 6.00 m/s? 3) A certain freely falling object requires 1.65 s to travel the last 38.0 m before it hits the ground. From what height above the ground did it fall?
A red ball is dropped from rest at a height of 6.20 m. A blue ball at a height of 10.1 m is thrown down at the same instant at 6.00 m/s. How long does it take the blue ball to catch up with the red ball? 2) An arrow is shot straight up in the air at an initial speed of 30.0 m/s. After how much time is the arrow heading downward at a speed of 6.00 m/s? 3) A certain freely falling object requires 1.65 s to travel the last 38.0 m before it hits the ground. From what height above the ground did it fall?
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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1) A red ball is dropped from rest at a height of 6.20 m. A blue ball at a height of 10.1 m is thrown down at the same instant at 6.00 m/s. How long does it take the blue ball to catch up with the red ball?
2) An arrow is shot straight up in the air at an initial speed of 30.0 m/s. After how much time is the arrow heading downward at a speed of 6.00 m/s?
3) A certain freely falling object requires 1.65 s to travel the last 38.0 m before it hits the ground. From what height above the ground did it fall?
4) image

Transcribed Image Text:A small mailbag is released from a helicopter that is descending steadily at 1.50 m/s.
(a) After 2.00 s, what is the speed of the mailbag?
21.1
m/s
(b) How far is it below the helicopter?
22.6
Your response differs from the correct answer by more than 10%. Double check your calculations. m
(c) What are your answers to parts (a) and (b) if the helicopter is rising steadily at 1.50 m/s?
18.1
m/s
|16.6
Your response differs from the correct answer by more than 10%. Double check your calculations. m
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