CHAPTER 21. MOTION IN ONE DIMENSION 21.7
Chapter 21 End of chapter exercises
1. Give one word/term for the following descriptions.
a. The shortest path from start to finish.
b. A physical quantity with magnitude and direction.
c. The quantity defined as a change in velocity over a time period.
d. The point from where you take measurements.
e. The distance covered in a time interval.
f. The velocity at a specific instant in time.
2. Choose an item from column B that match the description in column A.
Write down only the letter next to the question number. You may use an
item from column B more than once.Column A Column B
a. The area under a velocity - time graph gradient
b. The gradient of a velocity - time graph area
c. The area under an acceleration - time graph velocity
d. The gradient of a position - time graph displacement
acceleration
slope3. Indicate whether the following statements are TRUE or FALSE. Write only
“true” or “false”. If the statement is false, write down the correct statement.a. A scalar is the displacement of an object over a time interval.
b. The position of an object is where it is located.
c. The sign of the velocity of an object tells us in which direction it is
travelling.
d. The acceleration of an object is the change of its displacement over a
period in time.
4. [SC 2003/11] A body accelerates uniformly from rest fort 0 seconds after
which it continues with a constant velocity. Which graph is the correct
representation of the body’s motion?Physics: Mechanics 437