Ch2 HW Part 1 Constant veloci motion Problem 2.2 Problem 2.2 Larry leaves home a

Question

Ch2 HW Part 1 Constant veloci motion Problem 2.2 Problem 2.2 Larry leaves home at 9:05 and runs at constant speed to the lamppost. He reaches the lamppost at 9:06 immediately turns, and runs to the tree. Larry arrives at the tree at 9:10. Figure 1) Figure of 1 x (yards) 200 400 600 800 000 1200 Resources previous l 5 of 9 l next Part A What is Larry's average velocity, in yards/min, during each of these two intervals. Express your answer using three significant figures. Enter your answers numerically separated by a comma yards/min vi, v2 Submit My Answers Give Up Part B What is Larry's average velocity for the entire run? Express your answer using three significant figures 60 yards/min Submit My Answers Give U Incorrect, Try Again, 5 attempts remaining Provide Feedback Continue

Explanation / Answer

here,

part A)

distance of lamppost from home , d1 = 400 yards

time taken to reach the lamppost , t1 = 1 min

the average velocity during first interval , v1 = d1/t1

v1 = 400/1

v1 = 400 yards/min

distance of tree from lamppost , d2 = 1000 yards

time taken to reach the tree , t2 = 4 min

the average velocity during seccond interval , v2 = d2/t2

v2 = 1000/4

v2 = 250 yards/min

part B)

total time taken , t = 5 min

total displacement , d = 600 yards

Larry's average velocity for entire run , v = d/t

v = 600/5

v = 120 yards/min

Larry's average velocity for entire run 120 yards/min

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