Chapter 2, Problem 65AP

### College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300

Chapter
Section

### College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300
Textbook Problem

# A ball thrown straight up into the air is found to be moving at 1.50 m/s after rising 2.00 m above its release point. Find the ball's initial speed.

To determine
The initial speed of the ball.

Explanation

Given Info: The acceleration of the ball is âˆ’9.80â€‰m/s2 , the final velocity of the ball is 1.50â€‰m/s , and the displacement of ball is 2.00â€‰m .

Explanation:

The formula used to calculate the initial velocity of the ball is,

v0=v2âˆ’2aÎ”y

Here,

Î”y is the displacement of the ball

v is the final velocity of the ball

v0 is the initial velocity of the ball

a is the acceleration of the ball

Substitute 1.50â€‰m/s for v , âˆ’9.80â€‰m/s2 for a and 2

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