Question 1 (1 point)
Newton's first law of motion states that an object at rest will remain at rest or an object in motion will remain in a constant motion, unless acted on by an outside force. Another name for this law is the
a
law of gravity.
b
law of acceleration.
c
law of inertia.
d
law of momentum.
Question 2 (1 point)
Every few years, sailboats of different countries compete in a race for a trophy called the America's Cup. The boats sail over the same distance. What, besides the distance, is needed to find out the speed of each boat in the race?
a
the speed of the wind during the race
b
the size of each boat in the race
c
the time it takes each boat to finish the race
d
the skill of the crew of each boat in the race
Question 3 (1 point)
Victoria and Claire are playing a game of tug-of-war, but the flag tied to the center of the rope is NOT moving. What is happening to the rope in this game?
a
Victoria and Claire are applying equal forces in opposite directions.
b
Victoria and Claire are applying equal forces in the same direction.
c
Victoria is applying more force in one direction.
d
Claire is applying more force in one direction.
Question 4 (1 point)
Which of the following quantities is a velocity?
a
3 g/L in weight
b
15 m/s2
c
25 m/s
d
10 km/hr eastward
Question 5 (1 point)
Ethan is helping his father rearrange the furniture in their living room. They have two different tables that are the same size. When Ethan pushes on each table, he finds that it is harder to move table A than it is to move table B. Why does Ethan have to push with more force on table A than on table B?
a
Table A has more mass than table B.
b
Table A has more volume than table B.
c
Table A weighs less than table B.
d
Table A is less dense than table B
Question 6 (1 point)
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Which of the following best describes the acceleration of the cyclist?
a
decreasing
b
zero and constant
c
constant but non-zero
d
increasing
Question 7 (1 point)
The graph below represents the relationship between the distance traveled and the time elapsed for an object in motion.
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Which of the following can be inferred from the graph?
a
The object is experiencing acceleration.
b
The object is moving along a curved path.
c
The object has a negative acceleration.
d
The object moves at a constant speed.
Question 8 (1 point)
A motorcycle is being driven on a road moving north at 40 miles per hour. A car is driving on the same road moving south at 40 miles per hour. Which of the following is true?
a
The motorcycle and car are moving at the same velocity and the same speed.
b
The motorcycle and car are moving at the same velocity but different speeds.
c
The motorcycle and the car are moving in opposite directions, so their speeds are different.
d
The motorcycle and the car are moving in opposite directions, so their velocities are different.
Question 9 (1 point)
Students are measuring four boxes using spring scales. The diagram shows their investigation. Which box has the most mass?n_WFqUYHoc6WhIXd7GNM8RB1-ruTzOpH-LlVY1ukSJ85LgxkBSlRbRiVYkFshL_-CXmtBWkwyrLT_5dJiXkrUd9V29vq_FTt7-K_uHYThBb1D463NyFWl9-Y3G460NiKlYtVmOXW7S-wdlQpSwRHYf-fZx_wEA
a
Box W
b
Box X
c
Box Y
d
Box Z
Question 10 (1 point)
The graph shows distance versus time for an object.
Which of the following correctly describes the object's motion?
a
The object is moving with constant velocity.
b
The object is moving with increasing velocity.
c
The object is moving with increasing acceleration.
d
The object is moving with constant acceleration.
Question 11 (1 point)
An airplane is flying at 80 kilometers per hour when a strong tail wind, traveling in the same direction at 5 kilometers per hour, hits the airplane. How can the net force acting on the airplane be calculated?
a
multiply the forces
b
add the forces
c
divide the forces
d
subtract the forces
Question 12 (1 point)
Unbalanced forces
a
make an object move opposite the applied force.
b
can change an object's speed but not direction.
c
cause the motion of an object to change.
d
maintain the constant motion of an object.
Question 13 (1 point)
Directions: Use the graphs below, which describe the motions of cars on a straight road, to answer any questions that follow.
Image
Which graph represents a car that is moving at constant speed?
a
Graph B
b
Graph D
c
Graph C
d
Graph A
Question 14 (1 point)
Which of the following best describes acceleration?
a
the speed of an object in constant motion
b
the rate at which an object changes its velocity
c
the speed of an object in a certain direction
d
the rate at which an object changes its direction
Question 15 (1 point)
Match the graph to the type of motion it describes.
Column A
Column A
1.
4b7efdfec0744969a3b2ec7b1659b35f_W
:
4b7efdfec0744969a3b2ec7b1659b35f_W
2.
51596eebb5984acda2965e3a3edfaeab_W
:
51596eebb5984acda2965e3a3edfaeab_W
3.
9c9691c241c0471db5328eb7564bb586_W
:
9c9691c241c0471db5328eb7564bb586_W
4.
71437ef97833458782a65d53199d7ffa_W
:
71437ef97833458782a65d53199d7ffa_W
Column B
a.increasing, nonlinear velocity
b.decreasing, nonlinear velocity
c.zero linear velocity
d.positive linear velocity
Question 16 (1 point)
The picture shows different objects being weighed on scales.
Which ball will require the most force to lift?
a
the beach ball because it is the largest in size
b
the soccer ball because it has the most mass
c
the golf ball because it is the smallest in size
d
the baseball because it has the most material
The answer to Q1 is option C: law of inertia.
The answer to Q2 is option C: the time it takes each boat to finish the race.
The answer to Q3 is option A: Victoria and Claire are applying equal forces in opposite directions.
The answer to Q4 is option D: 10 km/hr eastward.
The answer to Q5 is option A: Table A has more mass than table B.
The answer to Q6 is option C: constant but non-zero.
The answer to Q7 is option D: The object moves at a constant speed.
The answer to Q8 is option D: The motorcycle and the car are moving in opposite directions, so their velocities are different.
The answer to Q9 is option Y: Box Y.
The answer to Q10 is option A: The object is moving with constant velocity.
The answer to Q11 is option B: add the forces.
The answer to Q12 is option C: cause the motion of an object to change.
The answer to Q13 is option A: Graph B.
The answer to Q14 is option B: the rate at which an object changes its velocity.
The answer to Q15 is:
1. Graph D: decreasing, nonlinear velocity
2. Graph C: zero linear velocity
3. Graph B: positive linear velocity
4. Graph A: increasing, nonlinear velocity
The answer to Q16 is option B: the soccer ball because it has the most mass.