Recognize that objects are pulled toward the ground unless something holds them up.
Forces and Changes in Motion
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Some forces act through physical contact, while others act at a distance.
Identify familiar forces that cause objects to move, such as pushes or pulls, including gravity acting on falling objects.
Investigate and describe that the more mass an object has, the less effect a given force will have on the object's motion.
Investigate and describe that the greater the force applied to it, the greater the change in motion of a given object.
It takes energy to change the motion of objects.