GROWTH DEVELOPMENT CHILD
FORMATIVE ASSESSMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It will fall to the floor.
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It will begin moving in a circle.
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It will begin moving at a constant speed.
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It will stay at rest.
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Detailed explanation-1: -There is no unbalanced force acting upon the book and thus the book maintains its state of motion. When all the forces acting upon an object balance each other, the object will be at equilibrium; it will not accelerate.
Detailed explanation-2: -When forces are balanced, they cancel each other out, resulting in no change in motion for the object they are acting on. Unbalanced forces do not cancel each other out, and result in a change in motion for the object they are acting on.
Detailed explanation-3: -When the forces acting on an object have equal strength and act in opposite directions, they are balanced. These forces cancel out one another, and the motion of the object they are acting on remains unchanged.
Detailed explanation-4: -If the forces acting upon an object are balanced the object will continue to do what it is doing. Objects maintain a constant velocity unless acted upon by another force, therefore acceleration requires unbalanced forces.
Detailed explanation-5: -Newton made the above statement more precise by articulating the concept of force, a vector quantity. His First Law states that an object with a net force of zero acting on it will remain at rest, if initially at rest, or it will maintain a constant velocity.