Which of these is true?
A. Force is only present in a moving object.
B. Acceleration and interaction are third laws of motion.
C. Inertia is a force which keeps stationary object at rest.
D. Slow-moving objects have more inertia than fast-moving object.
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WHICH IS TRUE?
ANSWER
Among the given choices above the correct answer is letter C. Inertia is a force which keeps stationary object at rest.
WHY OTHER ANSWERS ARE INCORRECT?
• Letter A. is wrong because forces not only present in a moving object but also in object at rest (the gravitational force of the Earth acts on an object that is not moving).
• Letter B. is wrong because acceleration is the second law of motion and interaction is the third law of motion.
• Letter D. is wrong because fast moving objects actually have more inertia than slow moving objects.
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