Questions with Answers
Is it possible for an object's velocity to increase
while its acceleration decreases? - Answer>> Yes,
an example would be an object falling in the
presence of air resistance
The position-time graph above represents a cart
moving on a track. The positive direction is right.
Which of the following lists two labeled points at
which the cart is moving to the left? - Answer>> C
and E
Consider the motion of an object described by the
position-time graph above. When is the speed of
the object the greatest? - Answer>> At time 4.0 s
The graph above represents position x versus time
t for an object being acted on by a constant force.
The average speed during the interval between 1
s and 2 s is most nearly - Answer>> 6 m/s
At time t = 0, car X traveling with speed v0 passes
car Y which is just starting to move. Both cars then
travel on two parallel lanes of the same straight
road. The graphs of speed v versus time t for both
cars are shown above.
, Which of the following is true at time t = 20
seconds? - Answer>> Car Y is behind car X
From time t = 0 to time t = 40 seconds, the areas
under both curves are equal. Therefore, which of
the following is true at time t = 40 seconds? -
Answer>> Car Y is passing car X
The position vs. time graph for an object moving in
a straight line is shown above. What is the
instantaneous velocity at t = 2 s? - Answer>> -2
m/s
Shown above is the velocity vs. time graph for a
toy car moving along a straight line. What is the
maximum displacement from start for the toy car?
- Answer>> 7 m
Two identical bowling balls A and B are each
dropped from rest from the top of a tall tower as
shown in the diagram above. Ball A is dropped 1.0
s before ball B is dropped but both balls fall for
some time before ball A strikes the ground. Air
resistance can be considered negligible during the
fall. After ball B is dropped but before ball A strikes
the ground, which of the following is true? -