Standing on the roof of a 74-m tall building, a girl holds her hand past the edge and throws a ball straight up at 9.8 m/s. The ball rises, then falls and strikes the ground. Considering "up" to be the positive direction, find the ball's velocity v when it is 45 m above the ground. Remember to include a "-" sign if the velocity is negative. V= m/s Record your numerical answer below, assuming three significant figures.

Standing on the roof of a 74-m tall building, a girl holds her hand past the edge and throws a ball straight up at 9.8 m/s. The ball rises, then falls and strikes the ground. Considering "up" to be the positive direction, find the ball's velocity v when it is 45 m above the ground. Remember to include a "-" sign if the velocity is negative. V= m/s Record your numerical answer below, assuming three significant figures.

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
Standing on the roof of a 74-m tall building, a girl holds her hand past the edge and throws a ball
straight up at 9.8 m/s. The ball rises, then falls and strikes the ground.
Considering "up" to be the positive direction, find the ball's velocity v when it is 45 m above the
ground. Remember to include a "-" sign if the velocity is negative.
U
V=
m/s
Record your numerical answer below, assuming three significant figures.

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