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Chapter 1: Q32P (page 40)

The position of a baseball relative to home plate changes from<15,8,-3>m to<20,6,-1>m in0.1s. As a vector, write the average velocity of the baseball during this time interval.

Short Answer

Expert verified

The average velocity is:V鈬赌avg=50,-20,20m/s.

Step by step solution

01

Identification of given data

The position of a baseball relative to home plate changes from15,8,-3m to

20,6,-1

Time t = 0.1s

02

Calculating average velocity

The relative position of baseball from home plate changes from,

15,8,-3mto20,6,-1m.

To do so,we need to find the change in the position vector of the baseball in the time interval mentioned in the given problem

V鈬赌avg=鈭�r鈬赌鈭�t=20,6,-1-15,8,-30.1-0V鈬赌avg=5,-2,20.1V鈬赌avg=50,-20,20m/s

m/s

Thus, the average velocity of the baseball isV鈬赌avg=50,-20,20m/s.

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