Introduction to Motion

Question 1

What is the purpose of a reference point?

Revolt · Accepted Answer

to establish a point from which to measure future distance, or if movement has occurred

Question 2

Some life forms move so slowly that their movement cannot be detected by normal observation. The best way to determine any movement is by placing a mark at some point, and observing any change in position from it. Why is this true?

Revolt · Accepted Answer

The mark is a reference point.

Question 3

Assume each tick mark represents 1 cm. Calculate the total displacement from 0 if an object moves 3 cm to the left, then 7 cm to the right, and then 6 cm to the left. The object moves cm to the left. What is the total distance the object travels? cm

Revolt · Accepted Answer

2; Selection 1: 2; Selection 2: 16

Question 4

Question 4

Revolt · Accepted Answer

16

Question 5

Question 7

Revolt · Accepted Answer

0

Question 6

Zamir and Talia raced through a maze. Zamir walked 2 m north, 2 m east, 4 m south, 2 m east, 4 m north, 2 m east, 3 m south, 4 m east, and 4 m north. Talia walked 2 m north, 6 m east, 3 m south, 4 m east, and 4 m north. Compare their distances: Zamir walked meters and Talia walked meters.

Revolt · Accepted Answer

27; Selection 1: 27; Selection 2: 19

Question 7

Question 9

Revolt · Accepted Answer

19

Introduction to Motion Answers

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