A test rocket is fired straight up from rest with a net acceleration of 20 m/s2. After 4 seconds the motor turns off, but the rocket continues to coast upward with no appreciable air resistance. What maximum elevation does the rocket reach? Hint: There are two motions involved here. Upwards with upward directed acceleration 20 m/s2 for 4 s and the rest free fall. A. 487 m B. 327 m C. 320 m D. 408 m E. 160 m
A test rocket is fired straight up from rest with a net acceleration of 20 m/s2. After 4 seconds the motor turns off, but the rocket continues to coast upward with no appreciable air resistance. What maximum elevation does the rocket reach? Hint: There are two motions involved here. Upwards with upward directed acceleration 20 m/s2 for 4 s and the rest free fall. A. 487 m B. 327 m C. 320 m D. 408 m E. 160 m
Physics for Scientists and Engineers, Technology Update (No access codes included)
9th Edition
ISBN:9781305116399
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter2: Motion In One Dimension
Section: Chapter Questions
Problem 2.8OQ: A rock is thrown downward from the top of a 40.0-in-tall tower with an initial speed of m/s....
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A test rocket is fired straight up from rest with a net acceleration of 20 m/s2. After 4 seconds the motor turns off, but the rocket continues to coast upward with no appreciable air resistance. What maximum elevation does the rocket reach?
Hint: There are two motions involved here. Upwards with upward directed acceleration 20 m/s2 for 4 s and the rest free fall.
A. 487 m
B. 327 m
C. 320 m
D. 408 m
E. 160 m
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