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MaxineOne is when a force is applied. Two is exposure to a gravitational field which causes an acceleration due to the object approaching the center of gravity. Both of these apply to deceleration as well which is still acceleration. For instance a ball thrown into the air will decelerate to a stop or a curving arc. but this is still acceleration.
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Two or more forces that act on an object that do not cancel each other?
If the sum of all forces acting upon an object is not zero, then the object will accelerate. (Newton's first law)
What must be applied to an object to change its motion or direction?
If an object is at rest, a force must be applied to accelerate it (start it moving).
When two forces acting on an object are equal?
Newton's first law states that an object at rest stays at rest and an object in motion stays in motion with constant velocity unless acted upon by an unbalanced force. This is also called the law of inertia. So, the forces acting on an object are balanced when the object is not accelerating. This happens when the object is at rest, or when the object is moving at constant velocity. ===================== The forces on an object are balanced when their vector sum is zero.
What are two disadvantages of timber knots?
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What is the definition of a unbalanced force?
There is no such thing as "an unbalanced force". There are only forces. When two or more separate forces act on the same object, the GROUP of forces may be balanced or unbalanced. If the sizes and directions of all the individual forces add up to zero, then the GROUP of forces is balanced. If one of them changes or goes away, then the GROUP of forces is unbalanced.
