A man in a hot air balloon throws a rock downward with an initial velocity of 10m/s from a height of 75m. What speed does the rock have the instant before it hits the ground? vf=20m/s vf=30m/s vf=40m/s vf=50m/s

A man in a hot air balloon throws a rock downward with an initial velocity of 10m/s from a height of 75m. What speed does the rock have the instant before it hits the ground? vf=20m/s vf=30m/s vf=40m/s vf=50m/s

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter2: Motion In One Dimension

Section: Chapter Questions

Problem 7OQ: A student at the top of a building of height h throws one ball upward with a speed of vi and then...

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Question

A man in a hot air balloon throws a rock downward with an initial velocity of 10m/s
from a height of 75m. What speed does the rock have the instant before it hits the
ground?
vf=20m/s
vf=30m/s
vf=40m/s
vf=50m/s

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