# PHYSICS QUIZ 1 DESCRIBING MOTION ANSWERS ```PHYSICS QUIZ 1 DESCRIBING MOTION
1) A Physics teacher releases a lab cart from the top of an incline as shown in the figure. The teacher asks the students to
predict what the position-time graph for the horizontal motion of the cart will look like. Four students give their answers
shown below. Which student predicted the motion most accurately? A
2) The figure shows the velocity-time graph of an object. Which of the following statements is consistent with the
motion of the object. D
A.
The object is moving horizontally and
then descends a steep slope.
B.
The object passes through the origin at
2 seconds.
C
Assuming the object started at
position x = 0, it will pass through the origin
between 3 s and 4 s
D.
The acceleration of the object is not
constant, first the object accelerates in the
positive direction and then accelerates in the
negative direction.
3) Students track the motion of a car moving along horizontally from left to right. By placing a dot at the position of the
front of the car every 2 seconds, they produce the motion diagram displayed above. Which of the following velocitytime graphs is consistent with the motion diagram? A
4.
a.
b.
c.
d.
How can one tell what type of motion is being shown in a motion diagram C
Calculate the average speed with x/t
Examine the pictures
Examine the spacing between each picture.
The type of motion cannot be determined with this graph.
4. For which segment does the cart move the
greatest distance?
(A)
AB
(B)
BC
(C)
CD
(D)
DE
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