Ch. 12 Physical Science (Study Guide / 80 Correct Questions &) - Forces & Motion

The forces acting on a falling leaf are {Ans: gravity and air resistance}When a falling object reaches terminal velocity, the net force acting on it is ____________________. {Ans: zero}0 kg·m/s {Ans: Interpreting Graphics In Figure 12-3, what is the momentum of each skater at Time 1?}The type of force measured by a grocery store spring scale is _____. {Ans: weight.}inertia {Ans: #74 - Interpreting Graphics In Figure 12-2, what property of the satellite tends to keep it moving along through its orbit?}The observation that a charged object can attract or repel other charged objects led scientists to conclude that there are _______ types of charges. {Ans: two}When a pair of balanced forces acts on an object, the net force that results is {Ans: equal to zero.}In which of the following are action and reaction forces involved? {Ans: when a tennis racket strikes a tennis ball, when stepping from a curb, when rowing a boat (all of the above)}Compare the speed of a moving golf ball with the speed of a moving bowling ball if both balls have the same amount of momentum. {Ans: The speed of the golf ball is much