Physics/Chem 2: Question Preview (ID: 11845)


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Which situation most clearly presents an example of Newton\'s third law of motion?
a) A dropped ball continues to accelerate as it moves toward the ground. b) A dropped ball experiences the forces of air resistance and gravity as it falls. c) A dropped ball will continue in its state of motion unless it is acted upon by an external force. d) A dropped ball bounces because the earth exerts a force on the ball when they collide.
Which situation most clearly presents an example of Newton\'s third law of motion?
a) A rock continues to pick up speed as it falls from a cliff high above the ground. b) A book resting on a table remains in the same position until it is moved by some external force. c) A baseball breaks a bat by exerting an equal and opposite force when they collide. d) A 20-kilogram box requires more force to move than a 10-kilogram box.
Which statement best expresses Newton\'s third law of motion?
a) For every action, there is an equal and opposite reaction. b) When two objects collide, the one with the greatest mass exerts the greatest force. c) Force can be calculated by multiplying an object\'s mass and acceleration. d) An object at rest stays at rest unless acted on by an outside force.
An owl is resting on a branch. Which statement is most accurate?
a) The branch is supporting only half of the owl\'s weight. b) The branch must weigh more than the owl to support its weight. c) The branch is exerting an upward force on the owl. d) Neither the branch nor the owl is affected by the force of gravity.
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 ball would have remained in its state of rest had the golf club not applied a force. b) The ball applied an equal and opposite force to the club when the club struck the ball. c) The golf club had more force in its swing than the golf ball had in its state of rest. d) The ball\'s acceleration was dependent upon its mass and the force applied by the golf club.
Which situation most clearly presents an example of Newton\'s third law of motion?
a) A row boat moves forward as the oars push water backward. b) A parked car will not move unless acted upon by an external force. c) Earth takes 365 days to revolve around the sun and 24 hours to rotate on its axis. d) A billiard ball falls faster than a ping pong ball when they are dropped.
A cat jumps from the ground onto a table. According to Newton\'s third law of motion, which of the following is true?
a) The cat\'s muscles are stronger than the force of gravity. b) The net force on the cat is dependent upon the cat\'s mass and acceleration. c) Once the cat was in motion, an external force was required to bring the cat to rest. d) When the cat pushed down on the ground to jump, the ground applied a force to the cat.
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) 2 N b) 50 N c) 15 N d) 5 N
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
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) Car A will accelerate faster because its lesser mass will be less affected by friction than car B. b) Gravity will cause both cars to roll at the same acceleration despite their masses. c) Friction will be the same for both cars, causing them to roll at the same acceleration. d) Car B will accelerate faster because its greater mass will counteract friction more than car A.
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