What does it mean when the marks on a motion map are spaced closer together?
A motion map can represent the position, velocity, and acceleration of an object at various clock readings. The corresponding motion map has the points spaced farther apart (because the car would go a further distance in each second), and the velocity vectors (arrows) are longer, because the car is moving faster.
Do motion diagrams show direction?
A motion diagram is a series of snapshots of the motion of the object, taken at regular time intervals. A motion diagram shows only the POSITION of the object on the position axis.
How can the map be changed so it shows constant acceleration after the object changes direction?
How can the map be changed so it shows constant acceleration after the object changes direction? by adding vectors that are all the same length and placing them above the current top row of vectors. by adding vectors that gradually increase in length and placing them above the current top row of vectors.
What is the relationship between the size and direction of the arrow and the acceleration?
As we discussed before, vector quantities have both MAGNITUDE and DIRECTION. The MAGNITUDE (SIZE) of the acceleration will be indicated by the arrow’s length, and the DIRECTION will be indicated by the direction in which the arrowhead is pointing.
Which graph shows an object with constant acceleration?
A straight line is a curve with constant slope. Since slope is acceleration on a velocity-time graph, each of the objects represented on this graph is moving with a constant acceleration. Were the graphs curved, the acceleration would have been not constant.
Does a positive acceleration always mean that an object is speeding up?
In Example A, the object is moving in the positive direction (i.e., has a positive velocity) and is speeding up. When an object is speeding up, the acceleration is in the same direction as the velocity. Thus, this object has a positive acceleration.
Is it possible for speed in one dimension to be constant while the acceleration is not zero group of answer choices?
No, in one dimension constant speed requires zero acceleration.
Which of the following is an example of an object with zero velocity but a non zero acceleration?
Yes. For example, a rock thrown straight up in the air has a constant, nonzero acceleration due to gravity for its entire flight. However, at the highest point it momentarily has a zero velocity. A car, at the moment it starts moving from rest, has zero velocity and nonzero acceleration.