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.

Revolt · Accepted Answer

✔ 2; The object moves cm to the left.: 2; What is the total distance the object travels? cm: 16

Question 4

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.

Revolt · Accepted Answer

Zamir walked meters and Talia walked meters.: 27; Zamir walked meters and Talia walked meters.: 19

Question 5

91013✔ 16

Revolt · Accepted Answer

✔ 16

Question 6

✔ 02345

Revolt · Accepted Answer

✔ 0

Question 7

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.

Revolt · Accepted Answer

✔ 27; Zamir walked meters and Talia walked meters.: 27; Zamir walked meters and Talia walked meters.: 19

Question 8

17✔ 19212325

Revolt · Accepted Answer

✔ 19

Question 9

greater thanless than✔ equal to

Revolt · Accepted Answer

✔ equal to

Introduction to Motion Answers

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