Physics – First and Second Six Weeks Review Worksheet #1 AISD DCBA

Name: ______Period: ______

State Standards: 3.F Scientific Processes, PHYS.4 Science Concepts . The student knows and applies the laws governing motion in a variety of situations. (A) generate and interpret graphs and charts describing different types of motion, including the use of real-time technology such as motion detectors or photogates; PHYS.4 (B) describe and analyze motion in one dimension using equations with the concepts of distance, displacement, speed, average velocity, instantaneous velocity, and acceleration

1(1). If two displacement vectors of 6 meters and 8 meters (with varying directions) are added together, then the resultant could range anywhere between ___ meters and ___ meters.

A . 0,48 B. 0,14 C. 2,14 D. 1.33,48 E. No such prediction can be made F. A prediction can be made but none of these choices are correct

2(2). The vector sum (magnitude only) of 25.0 m, north + 18.0 m, East is ___ m.

A. 7.00 B. 21.5 C. 30.8 D. 35.8 E. 43.0 F. 54.2 G. 949 H. None of these

3(4). A student on her way to school walks four blocks east, three blocks north, and another four blocks east, as shown in the diagram.

Compared to the distance she walks, the magnitude of her displacement from home to school is A. less. B. greater. C. the same.

4(5). A minivan travels along a straight road. It initially starts moving toward the east. Construct a position-time graph of the minivan’s motion using the information in the table below. Then use the graph to answer the questions (a – g) that follow.

a. Does the minivan move to the east? If so, during which time interval(s)?

b. Does the minivan move to the west? If so, during which time interval(s)?

c. Is the minivan’s speed between t1 and t2 greater than, less than, or equal to its speed between t2 and t3?

d. Is the minivan’s speed between t4 and t5 greater than, less than, or equal to its speed between t6 and t7?

e. Does the minivan ever stop completely? If so, at which time(s)?

f. Does the minivan ever move with a constant velocity? If so, at which time(s)?

g. What is the total displacement of the minivan during the trip?

5(6). Using the graph to the left above, calculate the velocity of the object between 5 seconds and 10 seconds.
6(7). Describe the motion of the object between 1 second and 5 seconds. ______
______
7(8). Using the graph to the left, describe the motion of the object between 0 seconds and 10 seconds.
8(9). Using the graph graph to the left, calculate the displacement of the object.
9(10). Using the graph to the left, calculate the acceleration of the object between 0 seconds and 5 seconds.

10(28) . A hiker travels south along a straight path for 1.5 h with an average velocity of 0.75 km/h. The hiker takes a 45min rest and then travels south for 2.5 h with an average velocity of 0.90 km/h.

What is the hiker’s displacement for the total trip?

What is the hiker’s average velocity for the total trip?

11(28) . The motion of an object for a 14s time period is represented by the following graph.
The instantaneous velocity of the object at time t = 10 s is approximately ______.
What is the average velocity for the object ’ s motion?

12(29) . An ant on a picnic table travels 30 cm eastward, then 25 cm northward, and finally 15 cm westward. What is the ant’s directional displacement relative to its original position?

13(29). Which of the following best describes the motion of a car as represented by the graph below?

a. The car is cruising at constant velocity and then slows down gradually to a stop.

b. The car accelerates from a stop and then slows gradually to a stop and backs up.

c. The car is moving at constant velocity, slows to a stop, and then moves forward a little more and stops again.

d. The car accelerates from a stop, moves at constant velocity for a short time, and then undergoes rapid negative acceleration until it stops.