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20) When you stand at rest on a floor, the number of vertical forces acting on you is B) zero A) three C) two D) one. You'll get a detailed solution from a subject matter expert that helps you learn core concepts. 11) Whirl a rock at the end of a string and it follows a circular path. B) each equal your weight. 7) Which has zero acceleration? 13) A ball rests in the middle of a cart. D) 50 N to the right 11) An object is pulled with two forces, 10 N northward and 15 N southward. One at rest, one moving at a constant velocity, or one in mechanical equilibrium?, Your weight on the moon would be more than it is on Earth (T/F), Emily Easygo can paddle a canoe in still water at 8 km/h. E. All of these., An object maintains its state of motion because it has A. mass. It increases. Study with Quizlet and memorize flashcards containing terms like Which has zero acceleration? 12) If gravity between the Sun and Earth suddenly vanished, Earth would continue moving in A) a curved path. 13) Which has zero acceleration? If the string breaks, the rock tends to A) continue in a circular path. B) is zero C) and velocity are the same D) none of the above . We reviewed their content and use your feedback to keep the quality high. You can specify conditions of storing and accessing cookies in your browser. PHY 1024 & 1014 University Physical Science HW #3 10) A girl pushes a cart to the left with a 100-N force. Which best describes the possible motion of the object? Earth's gravity pulls on the moon and keeps it in orbit. The amount of net force on the falling object is A) ON B) SON C) 50N D) 20 N E. 2003-2023 Chegg Inc. All rights reserved. gravity. B) follow a straight-line path. Constant velocity may include zero velocity or "at rest" and 10) A space probe in remote outer space continues moving A) because a force acts on it. C. in mechanical equilibrium. , after the brakes are applied. The lorry decelerates uniformly and comes to a stop 60 m 13) Which has zero acceleration? The object is at rest or is traveling at constant velocity. A) an object at rest B) an object in mechanical equilibrium C) an object moving at constant velocity D) all of the above E) none of the above PHY 1024 & 1014 University Physical Science HW #3 10) A girl pushes a cart to the left with a 100-N force. What does the moon's gravity do? The net force exerted on the. A boy pushes it to the right with a 50-N force. A 500 g ball and a 200 g ball are dropped from a tower. If she paddles this hard while canoeing upstream in a river flowing at 8 km/h, she will . Estimate the braking force needed to stop the lorry. The direction of the net force is to the A) west B) north C) south D) cast E) none of the above 12) A 50-N object falling in air experiences 10 N of air resistance. erosion A boy pushes it to the right with a 50-N force. momentum., Your weight is.. C) remains in the middle of the cart. D) all, depending on how quickly the cart is pulled. After spotting a hazard, the driver applies the brakes. 14) The net force on any object moving at constant velocity is A) zero. Which item produces the magnetic field in the electromagnet? You'll get a detailed solution from a subject matter expert that helps you learn core concepts. Acceleration is rate of change of velocity and velocity is a vector quantity which means that it is speed with direction. 15) When a 10-N object is suspended at rest by two vertical strands of rope, the tension in each rope is A) SN B) more than 5 N C ) less than 5 N D ) ION 16) Burl and Paul have a total weight of 1300 N. The tensions in the ropes that support the scaffold they stand on add to 1700 N. The weight of the scaffold itself must be A) 800 N B) 500 N C) 600 N D) 400 N 17) When you stand at rest on a pair of bathroom scales, the readings on the scales will always A) cach be half your weight. 8. B) is zero C) and velocity are the same D) none of the above ace a book that weighs 10 Non horizontal. If acceleration is zero it means that velocity is constant. Physics questions and answers. How is an object's gravitational pull affected when its mass increases? D) a straight-line path. B) in a curved path. 18) Fido weighs 120 N and carries Trixie who weighs 40 N on her back. Study with Quizlet and memorize flashcards containing terms like Which object has zero acceleration? As according to chegg policy i have to ans, 13) Which has zero acceleration? gravity. D. acceleration. C) even though no force acts on it D) due to gravity. C) each be half your weight. 7) Which has zero acceleration? C) add up to more than your weight D) add to equal your weight. C) spiral inward. B) is zero C) and velocity are the same D) none of the above ace a book that weighs 10 Non horizontal surface and the support force on the A) less than 10 N B) ION C) greater than 10 N D) dependent on whether the book lies flat or stands upright. folding C. speed. Which force puts an object into free fall? C) 100 N to the right. We reviewed their content and use your feedback to keep the quality high. The net force exerted on the cart is A) 50 N to the left. The object is at rest or is traveling at constant velocity. gravity. A. at rest. 2003-2023 Chegg Inc. All rights reserved. B) each be equal to your weight. Physics questions and answers. pulls back on the Earth. PHY 1024 & 1014 University Physical Science HW #3 10) A girl pushes a cart to the left with a 100-N force. D) fall straight downward. Acceleration is rate of change of velocity and velocity is a vector quantity which means that it is speed with direction. D) add up to more than your weight. B) an outward spiral path. , How many layers are there in Earth's core? A) an object at rest B) an object moving at constant velocity C) an object in mechanical equilibrium D) all of the above E) none of the above 3) Whenever the net force on an obiect is zero, its acceleration A) may be zero. A) an object at rest B) an object in mechanical equilibrium C) an object moving at constant velocity D) all of the above E) none of the above If acceleration is zero it means that velocity is constant. The object is traveling at constant velocity or is slowing down. C) an inward spiral path. Experts are tested by Chegg as specialists in their subject area. A) an object at rest B) an object moving at constant velocity C) an object in mechanical equilibrium D) all of the above E) none of the above 3) Whenever the net force on an obiect is zero, its acceleration A) may be zero. When you quickly jerk the cart forward, the ball A) hits the front of the cart. 7) Which has zero acceleration? A) an object at rest B) an object in mechanical equilibrium C) an object moving at constant velocity D) all of the above E) none of the above B) 100 N to the left. D. with a net force of zero. Experts are tested by Chegg as specialists in their subject area. The acceleration of an object is zero. Constant velocity may include zero velocity or "at rest", Speed is zero or speed is constant and no change in direction, This site is using cookies under cookie policy . one two four three, Which of the following forces has not changed Earth's surface? Explanation. E) four. A driver is driving a 6371 kg lorry. Any other Gypresgions come from shakespeare and are they used today. A) an object at rest B) an object moving at constant velocity C) an object in mechanical equilibrium D) all of the above E) none of the above 3) Whenever the net force on an obiect is zero, its acceleration A) may be zero. weathering The support force on Fido's feet is A) more than 160 N. B) 160 N. C) 40 N. D) 120 N 19) You hang from a pair of gym rings and the upward support forces of the rings will always A) add up to equal your weight. B. moving at constant velocity. B) hits the back of the cart. Use your feedback to keep the quality high the moon & # x27 ; s gravitational pull affected its... To Chegg policy i have to ans, 13 ) a girl pushes a cart e. All these.... Of storing and accessing cookies in your browser the Sun and Earth suddenly,... 'Ll get a detailed solution from a subject matter expert that helps you core! And 15 N southward Earth 's core and comes to a stop 60 m 13 ) Which has acceleration. 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