Download Physics Motion in One Dimension: Concepts and Exercises and more Exams Physics in PDF only on Docsity!
1 /
Physics motion in one dimension concepts
1. 1. An object's
velocity can change directions when its acceleration is constant. An example of this is when an object, like a ball, is. The velocity is positive going up and negative going down. The acceleration will remain constant the entire time.: thrown straight up
2. An
object can have increasing speed while its acceleration is decreasing. An example would be an object released from rest in the .: presence of air friction
3. An object is moving with constant acceleration in equal times its
: velocity changes by equal amounts.
4. When a ball is
thrown straight up, its : velocity at the top is zero.
5. W
hen a ball is thrown straight up, its acceleration at the top is : g (9.80 m/s2)
6. A ball, moves up along a smooth hill of ice will have the same
acceleration, both the hill and the hill: up, down
2 /
7. A skydiver jumps from an airplane. When she
reaches terminal velocity, her acceleration is .: essentially zero
8. Objects A and B both
start from rest. They both accelerate at the same rate. However, object A accelerates for twice the time as object B. During the times that the objects are being accelerated, comparing the traveled by object A to that of object B, object A travels : distance, four times as far.
9. Objects A and B both start from rest. They both accelerate at the
same rate. However, object A accelerates for twice the time as object B. Compared to the final of object A to that of object B, object B is twice as fast.: speed
10. A ball is dropped from the top
of a building. A second ball is thrown straight down from the same building. They are released at the same time. Neglecting air resistance the two balls : accelerate at the same rate
11. Ball A is
dropped from the top of a building. One second later ball B is dropped. As time progresses the difference in their : speeds remains constant.
12. Ball A is dropped from the top of a building. One second later, ball B is
dropped from the same building. As time progresses, the distance between
4 / acceleration : may be in motion.
20. A horizontal line on an versus
time graph indicates that the object is at a constant acceleration.: acceleration
21. An object's velocity can when its
acceleration is constant. Exam- ple, when a rock is thrown straight up.: change direction
22. The distance time graph on the right compares distance as
a function of time an object in straight-line motion. According to the graph, the object most likely has an : increasing velocity.
23. The distance time graph on the
right represents the motion of an object sliding down a .: frictionless inclined plane
24. If an object is traveling east with a
decreasing speed, the direction of the object's acceleration is : west
25. postulated that all objects will fall with the same constant
accelera- tion in the absence of air or other resistance.: Galileo
26. The slope
of a position time graph gives : instantaneous velocity.
27. The
5 / slope of a velocity versus time graph gives : instanta- neous acceleration.
28. Distance is to
displacement as speed is to : velocity
29. If you run around a track and return to the
same starting point, your av- erage velocity is zero. ( uses displacement rather than distance. The displacement in this case is zero.): velocity
30. Ac
celeration is a vector quantity that represents the - : time-rate of change in velocity.
31. When an object is released from rest and falls in the absence of friction
its is constant.: acceleration
32. Instantaneous speed is : never
negative.
33. Motion in the negative x direction is represented on an x vs. t plot by a
: downward sloping curve.
34. Oil drips
at 0.5 second intervals from a truck that has an oil leak. The pattern shown represents the spacing of oil drops as the car uniformly
