CHAPTER 5 test bank physics

CHAPTER 5 test bank physics1) Mass is a measure of how difficult it is to change the velocity of an object. Answer: TRUE 2) Force is a vector quantity. Answer: TRUE 3) A force is required for an object to move. Answer: FALSE 4) An object always moves in the direction of the net force pushing on it. Answer: FALSE 5) When a ball is thrown upwards, it reaches its maximum height when the force pushing it up is equal to its weight. Answer: FALSE 6) An object is moving with constant velocity. Which of the following statements is true? A) A constant force is being applied in the direction of motion. B) There are no forces acting on the object. C) The net force on the object is zero N. D) There is no frictional force acting on the object. 7) The acceleration of an object does not have to be in the same direction as the net force applied to it. Answer: FALSE 8) An object moving along a curved path with constant speed does not have a net force acting on it. 9) When a parachutist jumps from an airplane, he eventually reaches a constant speed, called the terminal velocity. This means that A) the acceleration is equal to g. B) the force of air resistance is equal to zero N. C) the effect of gravity has died down. D) the force of air resistance is equal to the weight of the parachutist. 10) When a parachutist jumps from an airplane, he eventually reaches a constant speed, called the terminal velocity. This is an example of A) Newton's First Law of motion. B) Newton's Second Law of motion. C) Newton's Third Law of motion. D) All of Newton's laws apply to this situation. 11) A force of 120 N is applied to an object whose mass is 30 kg. The object's acceleration is A) 3600 m/s2 . B) 150 m/s2 . C) 4.0 m/s2 . D) 0.25 m/s2 . 14) A net force of 135 N is applied to a certain object. As a result, the object accelerates with an acceleration of 24.0 m/s2 . The mass of the object is A) 2880 kg. B) 144 kg. C) 0.200 kg. D) 5.60 kg. This study source was downloaded by from CourseH on :45:34 GMT -06:00