In the absence of an external force, a moving object will Select one: a. stop im
ID: 1536010 • Letter: I
Question
In the absence of an external force, a moving object will Select one: a. stop immediately. b. slow down and eventually come to a stop. c. go faster and faster. d. move with constant velocity. A normal force is: Select one: a. An action reaction pair with the gravitational force. b. A field force acting at a distance. c. A contact force acting on two objects touching. d. The same thing as the gravitational force. A constant net force acts on an object. Describe the motion of the object. Select one: a. constant acceleration b. constant speed c. constant velocity d. increasing accelerationExplanation / Answer
1)In the absence of any net external force a moving object will keep moving at a constant speed in a straight line.This is also known as the Law of Inertia.
So the option is : D
2) The normal force is the support force exerted upon an object that is in contact with another stable object. For example, if a book is resting upon a surface, then the surface is exerting an upward force upon the book in order to support the weight of the book.
The opition is : C
3) If the forces are unbalanced, you will get acceleration. If the unbalanced force is constant, the acceleration will be constant.
F = ma
If F > 0, a will be > 0
If F = 0 (balanced, no net force), then a = 0.
The option is : A
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