A projectile is fired straight upward at 141 m/s. How fast is it moving at the instant

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A projectile is fired straight upward at 141 m/s. How fast is it moving at the instant it reaches the top of its trajectory? Suppose that it were fired upward at 45° instead. Then its horizontal component of velocity is 100 m/s. What would be the speed of the projectile at the top of its trajectory?
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Conceptual Physics

ISBN: 978-0321568090

11th edition

Authors: Paul G. Hewitt

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