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Physics for Scientists and Engineers: A Strategic Approach with Modern Physics | 3rd Edition | ISBN: 9780321740908 | Authors: Randall D. Knight
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A ball tossed straight up has v = 0 at its highest point.

Chapter 6, Problem 2CQ

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QUESTION:

Problem 2CQ

A ball tossed straight up has v = 0 at its highest point. Is it in equilibrium? Explain.

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QUESTION:

Problem 2CQ

A ball tossed straight up has v = 0 at its highest point. Is it in equilibrium? Explain.

ANSWER:

Step 1 of 2

No, The ball is not in equilibrium.

There are two reasons to explain. The first reason is given as follows. Even though the velocity of the ball is zero at the highest point, the ball is still acted by gravity. The acceleration is not zero here.

In the case of equilibrium, the net force acting on the object must be zero. But the ball is attracted by the gravity and doesn’t have zero net force.

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