HW 4: Problem 1 Problem List Next Problem Previous Problem (5 points) Joni runs
ID: 2910681 • Letter: H
Question
HW 4: Problem 1 Problem List Next Problem Previous Problem (5 points) Joni runs several laps around a 400-meter track. Identify each phrase as defining a Constant Quantity, Changing Quantity, or Not a Quantity Changing Quantity 1. The time elapsed since Joni started running. Constant Quantity 2. The straight-line distance from Joni to her starting point. Not a Quantity #3" The 400-meter track. Changing Quantity 4. The time it took Joni to run the first lap. Constant Quantity 5. The distance Joni ran when she had finished two laps. Note: In order to get credit for this problem all answers must be correct. Preview MvExplanation / Answer
Given joni runs several laps around 400 m track.
a.Time elapsed since joni started running.
It is a changing quantity as the time goes on increasing.
b.straight line distance from her to starting point
It is a changing quantity. Intially the distance goes on increasing then it decrease again increases and again decrease and becomes zero as she completes 1 lap.
C.400m track.
Nothing is measured here so no quantity
D.time took joni to complete 1st lap.
Changing quantity it depends upon speed that join runs if speed is constant then then it is constant quantity
E.distance joni runs for First 2 laps is 400+400=800 m
It is a constant quantity never change
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