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Physical Science, 5/e

Motion

# Chapter 2 Multiple Choice Quiz 1

Please answer all questions

 1 How fast you are moving is a property of motion known as A) speed. B) velocity. C) acceleration. 2 How fast you are moving in which direction is a property of motion known as A) speed. B) velocity. C) acceleration. 3 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. 4 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. 5 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. 6 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. 7 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. 8 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 9 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 10 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.