Question 1
If an object’s velocity is zero, its position will change.
Question 2
If object’s acceleration is zero, its velocity will change.
Question 3
If an asteroid is moving at a constant speed in its orbit,
it is not accelerating.
Question 4
Given the steps that follow below, what is the correct
sequence of steps in the scientific method?
Given steps:
I. State a problem,
II. Analyze and interpret data,
III. Develop a hypothesis,
IV. Share the results with other scientists,
V. Design and perform experiment to test the hypothesis.
I – II – III – IV – V
V – II – I – III
Question 5
A horizontal force of 100 N is required to push a box across
a floor at a constant velocity. The net force acting on the box is ____ N.
200
50
100
0
Question 6
A rock sitting on the surface of an asteroid is moved some
distance above the surface. How is the mass of the rock affected by its change
in position?
Increase
decrease
cannot be determined
Question 7
If object’s net force is zero, its velocity will change.
Question 8
You drop two rocks. One rock has a mass of 8 kg and the
other a mass of 7 kg. The 8 kg rock falls no faster than the 7 kg rock because
the _____ .
higher mass rock has a larger acceleration
lower mass rock has a larger acceleration
force of gravity is the same for both
Question 9
You drop a bowling ball from the second floor balcony of a
building. While the bowling ball falls, its speed _____ .
and acceleration both increase
and acceleration both decrease
decreases and its acceleration increases
Question 10
Newton’s law of gravity is an example of a _____ force law.
linear square
linear
direct square
Question 11
Which of the following the correct way to report 0.00123 in
scientific notation?
12.3 x 10^-4
123 x 10^-5
0.123 x 10^-2
Question 12
The acceleration of a train that increases its velocity from
10.0 m/s to 14.0 m/s in 3.30 seconds is _____ m/s^2.
Only enter your numerical answer below – do not include
units. Report your answer to 2 decimal places.
Question 13
Preparing for a turn, a bus slows down with an acceleration
of -2.0 m/s^2. Calculate how much time it takes the bus to slow down from 13.0
m/s to 5.0 m/s.
Only enter your numerical answer below – do not include
units. Report your answer to 2 decimal places.
Question 14
An 77 kg man starts from rest and after 1.40 seconds is
running at a speed of 12.0 m/s. The force needed for this man to get up to this
speed in 1.40 seconds is ____ N.
Only enter your numerical answer below – do not include
units. Report your answer to 2 decimal places.
Question 15
If the engines of a jet produce a force of 150,000 N, the
acceleration of a 31,000 kg aircraft during takeoff is ____ m/s^2.
Only enter your numerical answer below – do not include
units. Report your answer to 2 decimal places.
Question 16
A 37 N horizontal force pushes on a 3.8 kg mass resting on a
horizontal surface. The surface exerts a friction force of 21 N against the
motion. The acceleration of the 3.8 kg mass is ____ m/s^2.
Only enter your numerical answer below – do not include units.
Report your answer to 2 decimal places.
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