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Chapter 2: Q34P (page 45)

The position of a golf ball relative to the tee changes from<50,20,30>m to<53,18,31>m in0.1second. As a vector, write the velocity of the golf ball during this short time interval.

Short Answer

Expert verified

The velocity of the golf ball is: V鈬赌avg=30,-20,10m/s.

Step by step solution

01

Identification of given data

The position of a golf ball relative to the tee changes from50,20,30m to 53,18,31m

Time t = 0.1s

02

Calculating average velocity

The position of golf ball relative to the tee changes from,

50,20,30mto53,18,31m

To find the average velocity vector find the change in position (as a vector) then divide it over the time interval that was needed to change,

V鈬赌avg=鈭�r鈬赌鈭�tV鈬赌avg=53,18,31-50,20,300.1-0V鈬赌avg=30,-20,0m/s

m/s

Hence, the velocity of the golf ball during the short time interval isV鈬赌avg=30,-20,0m/s.

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