Forces and Motion 5.P.5A.3 Plan and conduct controlled scientific investigations to test the effects of balanced and unbalanced forces on the rate and.

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Presentation transcript:

Forces and Motion 5.P.5A.3 Plan and conduct controlled scientific investigations to test the effects of balanced and unbalanced forces on the rate and direction of motion of objects.

Balanced Forces Balanced forces produce no change in the motion of an object. Therefore, if an object is not moving, it will stay motionless. However, if an object is moving, it will maintain its rate of motion (speed) and direction. Balanced forces are equal in strength and opposite in direction.

Unbalanced forces Unbalanced forces produce a change in the motion of an object. Therefore, a motionless object will begin to move, while an object that is already moving will change its speed and/or direction. Several forces can act on an object at the same time. An unbalanced force is one that does not have another force of equal magnitude and opposite direction off-setting it. Rate of motion is the speed of the object or how fast or slow the object is moving.

Unbalanced forces Unbalanced forces can change the rate or direction of motion of an object in different ways: Object at rest If an unbalanced force acts on an object at rest, the object will move in the direction of the force. A stronger force (push or pull) will make it move faster.

Unbalanced forces Unbalanced forces can change the rate or direction of motion of an object in different ways: Object in motion If an object is moving, an unbalanced force will change the motion of the object in different ways depending on how the force is applied. The unbalanced force may speed the object up, slow it down, or make it change directions. If the force is applied in the same direction as the object is moving, the object will speed it up. If the force is applied in the opposite direction as the object is moving, the object will slow it down or stop it. If the force is applied to the side of the moving object, the object will turn.