Multiple Choice Quiz
Multiple Choice Quiz
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 1 Which of the following units could be best associated with a scalar quantity rather than a vector quantity? A) kilogram B) newton C) meters per second D) meter/second 2 In which of the following examples is the motion of the car accelerated? A) A car travels on a straight, flat road at the constant speed of 40 km/h. B) A car climbs a steep hill with its speed dropping from 18 km/h at the bottom to 9 km/h at the top. C) A car climbs a steep hill at the constant speed of 70 km/h. D) A car rolls backwards down a steep hill at a constant speed of 70 km/h. 3 The speedometer in a car indicates A) an average speed during a trip. B) a vector quantity. C) a scalar quantity. D) the distance the car travels. 4 Distance A) is equal to v x t (speed times time). B) can be measured using the unit of meters/second. C) is an equivalent to time in Newton's theory of universal gravitation. D) can be expressed using a vector unit such as newtons. 5 According to the Pythagorean theorem, A) the shortest distance between any two objects is a straight line. B) the cube root of the hypotenuse of a right triangle is equal to the square root of the sum of the sides. C) if a right triangle has short sides of 3 cm and 4 cm, then the long side must be 5 cm. D) vector quantities can be added, but not subtracted. 6 In a vacuum on the surface of earth, the acceleration of a brick dropped downward is A) greater than that of a small stone dropped downward. B) the same as that of a small stone dropped downward. C) less than that of a feather dropped downward. D) zero since there is no air resistance in a vacuum. 7 The weight of an object A) is unrelated to the quantity of matter it contains. B) is the force with which it is attracted to the earth. C) is the same thing as its mass but is expressed in different units. D) can be measured using newtons (SI system) or pounds (British system). 8 How fast you are moving is a property of motion known as A) speed. B) velocity. C) acceleration. D) momentum. 9 How fast you are moving in which direction is a property of motion known as A) speed. B) velocity. C) acceleration. D) momentum 10 How fast you are changing your speed or direction of travel is a property of motion known as A) speed. B) velocity. C) acceleration. D) none of the above. 11 Ignoring air resistance, an object falling toward the surface of the earth has a velocity that is A) constant. B) increasing. C) decreasing. D) acquired instantaneously. 12 Ignoring air resistance, an object falling toward the surface of the earth has an acceleration that is A) constant. B) increasing. C) decreasing. D) dependent on the weight of the object. 13 A ball rolling across the floor slows to a stop because A) there are unbalanced forces acting on it. B) the force that started it moving wears out. C) all the forces are balanced. D) the net force equals zero. 14 Ignoring air resistance, a bullet fired horizontally has how many forces acting on it after leaving the rifle? A) One, from the gunpowder explosion. B) One, from the pull of gravity. C) Two, one from the gunpowder explosion and one from gravity. D) Three, one from the gunpowder explosion, one from gravity, and one from the motion of the bullet. 15 The tendency of a moving object to remain in unchanging motion in the absence of an unbalanced force is called A) inertia. B) free fall. C) acceleration. D) impulse. 16 A heavy object and a light object are dropped from rest at the same time in a vacuum. The heavier object will reach the ground A) before the lighter object. B) at the same time as the lighter object. C) after the lighter object. D) It depends on the shape of the object. 17 A cannonball is fired straight up at 50 m/s. Neglecting air resistance, when it returns to its starting point its speed A) is 50 m/s. B) is more than 50 m/s. C) is less than 50 m/s. D) depends on how long it is in the air. 18 A change in the state of motion is evidence of A) a force. B) an applied force that is unbalanced. C) a force that is wearing down. D) any of these. 19 What do you know for sure about the forces on the system of you and a bicycle as you petal the bike at a constant speed in a straight line? A) The applied force you are exerting on the petal is greater than other forces. B) All forces are in balance. C) The resisting forces of friction are greater than the applied forces. D) Air and tire friction forces are less than the applied force. 20 What property of matter determines the resistance to a change in the state of motion for a given object? A) weight B) density C) mass D) any of these 21 With all other factors equal, if you double the unbalanced force on an object of a given mass the acceleration will be A) doubled. B) increased fourfold. C) increased by one-half. D) increased by one-fourth. 22 With all other factors equal, if you double the mass of an object while a constant unbalanced force is applied, the acceleration will be A) doubled. B) increased fourfold. C) one-half as much. D) one-fourth as much. 23 Which of the following is a unit that can be used for a measure of weight? A) kilogram B) newton C) kg × m/s D) none of these 24 Which of the following is a unit for a measure of resistance to a change of motion? A) lb B) kg C) N D) none of the above 25 The immediate source of the force that accelerates a car over a road comes from A) the engine. B) the tires. C) the road. D) all of these. 26 Doubling the distance between an orbiting satellite and the earth will result in what change in the gravitational attraction between the two? A) one-half as much B) one-fourth as much C) twice as much D) four times as much