Lab 1 Motion 1D

Question 1

average velocity=acceleration

Answer 1

v_av=∆x/∆t.
The slope is the rise over the run, where the rise is the displacement and the run is the time.

Question 2

Instantaneous velocity is the

Answer 2

limit of average velocity as the time interval shrinks to zero.
v=lim┬(∆t→0)⁡〖∆x/∆t〗

Question 3

Thus, an object accelerates whenever its

Answer 3

velocity changes, no matter what the change, it accelerates when its velocity increases, it accelerates when its velocity decreases. a_av=∆v/∆t

The instantaneous acceleration is defined as
a=lim┬(∆t→0)⁡〖∆v/∆t〗

Question 4

What does a horizontal line mean?

Answer 4

A horizontal line means that a position/object is at rest and not in motion

Question 5

what is the difference between the parts of the plot with positive slope and the parts
with negative slope?

Answer 5

Positive slope means that the object/man is moving forward(right). Negative slope
means that the object/man is moving back(left)

Question 6

Velocity Plots
1. What does a horizontal line mean?

Answer 6

constant velocity

Question 7

What is the difference between the parts of the plot with positive slope and the parts
with negative slope?

Answer 7

Positive slope means that the velocity and acceleration is positive, and the
object/man will move forward to the right. Negative slope means that the
object/man is slowing down and eventually going backwards to the left. This
means that the acceleration is negative, and the velocity will eventually turn
negative as well

Question 8

from the initial position, the man moves away from house to the final position during the
time t, and then reverse the direction of motion. If the man return from the final position to
the initial position during the same time t, would the velocity be different? Why or why
not?

Answer 8

The velocities would be different because velocity considers not only the magnitude
but the direction as well. The initial velocity and final velocity have the same
magnitude, but it has different directions, this means that the two velocities would be
different.

Question 9

ow far you would move in 3 min, if your speed is 0.5 m/s?

Answer 9

90 meters

Question 10

hat does the slope of the graph “Position vs. Time” represent? What did you need to do
to obtain a greater slope?

Answer 10

The slope of the graph “Position vs. Time” represents velocity. To obtain a greater
slope, the object in motion must move faster in terms of position in a shorter amount
of time. The faster they reach their final position, the greater the slope they have.