A 25.0 kg girl stands on a large raft that is 5.00 m and free to move across the river. The girls walks to the left side of the raft in 3.00 s. A. Her displacement relative to the water is 3.75 m. What is the mass of the raft? B. Assuming that she started from rest, and accelerates at a constant rate, what is her velocity relative to the water as she jumps from the raft? C. What is the force that she applied to the raft as she moved across the raft?

A 25.0 kg girl stands on a large raft that is 5.00 m and free to move across the river. The girls walks to the left side of the raft in 3.00 s. A. Her displacement relative to the water is 3.75 m. What is the mass of the raft? B. Assuming that she started from rest, and accelerates at a constant rate, what is her velocity relative to the water as she jumps from the raft? C. What is the force that she applied to the raft as she moved across the raft?

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter4: Motion In Two And Three Dimensions

Section: Chapter Questions

Problem 38P: A fastball pitcher can throw a baseball at a speed of 40 m/s (90 mi/b). (a) Assuming the pitcher can...

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A fastball pitcher can throw a baseball at a speed of 40 m/s (90 mi/b). (a) Assuming the pitcher can release the ball 16.7 m from home plate so the ball is moving horizontally, how long does it take the ball to reach bone plate? (b) How far does the ball drop between the pitcher’s hand and home plate?
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