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Force And Motion
Test Description: Reviews Newton's 1st and 2nd laws of motion
Instructions: Answer all questions to get your test result.
1) Newton’s first law is also called the law of inertia. Which of these scenarios is best explained by this law?
A
If you throw a 10 kg mass and a 2 kg mass with the same amount of force, the 2 kg mass will travel faster.
B
A small chair is easier to move than a refrigerator because the chair has a smaller mass.
C
When a roller coaster cart suddenly stops, it causes the passengers to be thrust forward into their seatbelts.
D
A rocket is propelled upward into space by gases pushing downward on Earth.
2) Victor kicked a 0.40 kg soccer ball with a force of 8 N, and Jose kicked a 0.40 kg soccer ball with a force of 4 N. Whose ball had the greater acceleration?
A
Their accelerations were the same
B
None of the above
C
Victor
D
Jose
3) A student is riding a bus. Suddenly, the bus driver applies the brakes to avoid hitting another car. The student is thrust forward into his seatbelt. Which of these correctly explains the student’s movement and the law that it refers to?
A
The bus stops, but the student’s body keeps moving; Newton’s 1st Law
B
The bus transfers negative energy to the student; Newton’s 4th Law
C
The force of the bus increased the mass of the student; Newton’s 2nd Law
D
The bus pushed the student so the student pushed back; Newton’s 3rd Law
4) Which of the following objects would have the greatest acceleration if they each have 15 N of force acting upon it?
A
100g book
B
5g ball
C
10g rock
D
50g orange
5) An object is moving to the right with a force of 20 N. What would happen if a force of 20 N started acting on it in the opposite direction?
A
The object’s velocity increases.
B
The object will stop accelerating, but keep moving at the same velocity.
C
The object’s velocity decreases.
D
The object comes to a stop.
6) According to Newton’s law of inertia, a ball that is rolling across the ground will:
A
Will stop unless there is an opposing force acting on it
B
Continue to roll indefinitely because there is no force acting on it
C
Continue to roll unless there is an opposing force acting on it
D
Continue to roll regardless of the forces acting on it
7) Basketball player A throws a ball to Basketball player B, who catches the ball with his hands. Which of the following correctly describes the forces in this example?
A
Basketball player B’s hands exerted an equal and opposite force on the ball.
B
The force of the ball was absorbed into Basketball player B’s hands.
C
Basketball player B exerted two times the force of the ball.
D
The force of ball was absorbed by the force of friction in the air.
8) Inertia is:
A
The equal and opposite reaction to any action
B
The movement caused by a force
C
The tendency of an object to remain still or continue moving
D
The resistance to a force or movement
9) If the forces acting on an object are balanced, the object will...
A
Stay at rest or keep moving at a constant velocity (no acceleration)
B
None of these
C
Slow down and stop
D
Speed up
10) If the forces on an object are unbalanced, the object will...
A
None of these
B
Stay at rest or keep moving at constant velocity
C
Accelerate (speed up, slow down, or change direction)
D
Explode
*select an answer for all questions
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