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Physics/Chem 2
Test Description: Newton's 2nd and 3rd laws.
Instructions: Answer all questions to get your test result.
1) Which situation most clearly presents an example of Newton\'s third law of motion?
A
A dropped ball will continue in its state of motion unless it is acted upon by an external force.
B
A dropped ball continues to accelerate as it moves toward the ground.
C
A dropped ball bounces because the earth exerts a force on the ball when they collide.
D
A dropped ball experiences the forces of air resistance and gravity as it falls.
2) Which situation most clearly presents an example of Newton\'s third law of motion?
A
A baseball breaks a bat by exerting an equal and opposite force when they collide.
B
A rock continues to pick up speed as it falls from a cliff high above the ground.
C
A 20-kilogram box requires more force to move than a 10-kilogram box.
D
A book resting on a table remains in the same position until it is moved by some external force.
3) Which statement best expresses Newton\'s third law of motion?
A
For every action, there is an equal and opposite reaction.
B
Force can be calculated by multiplying an object\'s mass and acceleration.
C
An object at rest stays at rest unless acted on by an outside force.
D
When two objects collide, the one with the greatest mass exerts the greatest force.
4) An owl is resting on a branch. Which statement is most accurate?
A
The branch is exerting an upward force on the owl.
B
The branch must weigh more than the owl to support its weight.
C
The branch is supporting only half of the owl\'s weight.
D
Neither the branch nor the owl is affected by the force of gravity.
5) A golf club struck a golf ball that was resting on the ground. According to Newton\'s third law of motion, which of the following is true?
A
The golf club had more force in its swing than the golf ball had in its state of rest.
B
The ball applied an equal and opposite force to the club when the club struck the ball.
C
The ball\'s acceleration was dependent upon its mass and the force applied by the golf club.
D
The ball would have remained in its state of rest had the golf club not applied a force.
6) Which situation most clearly presents an example of Newton\'s third law of motion?
A
A billiard ball falls faster than a ping pong ball when they are dropped.
B
A row boat moves forward as the oars push water backward.
C
A parked car will not move unless acted upon by an external force.
D
Earth takes 365 days to revolve around the sun and 24 hours to rotate on its axis.
7) A cat jumps from the ground onto a table. According to Newton\'s third law of motion, which of the following is true?
A
Once the cat was in motion, an external force was required to bring the cat to rest.
B
The net force on the cat is dependent upon the cat\'s mass and acceleration.
C
When the cat pushed down on the ground to jump, the ground applied a force to the cat.
D
The cat\'s muscles are stronger than the force of gravity.
8) A ball is accelerating at a rate of 10 m/s2. The ball\'s mass is 5 kg. What is the net force on the ball?
A
5 N
B
2 N
C
50 N
D
15 N
9) A ball is accelerating at a rate of 5 m/s2. The net force on the ball is 20 N. According to Newton\'s second law of motion, what is the ball\'s mass?
A
4 kg
B
100 kg
C
25 kg
D
15 kg
10) Two cars the same size and shape, but weighing different amounts, were both pushed over the edge of ramps of the same length and angle. Car A weighs 1 ton; car B weighs 2 tons.
A
Gravity will cause both cars to roll at the same acceleration despite their masses.
B
Car B will accelerate faster because its greater mass will counteract friction more than car A.
C
Car A will accelerate faster because its lesser mass will be less affected by friction than car B.
D
Friction will be the same for both cars, causing them to roll at the same acceleration.
*select an answer for all questions
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