If an object accelerates, there must be a force acting on it according to newton's second law, so I would answer true.
False. An object can accelerate without a push or pull acting on it if it is already in motion due to a previous push or pull. This is because of Newton's first law of motion, which states that an object will stay in its current state of motion unless acted on by an external force.
False. Balanced forces acting on an object will not change the object's velocity. When forces are balanced, there is no change in the object's velocity as there is no net force acting on the object.
false
True. Got that right on a test :)
True. Points are geometric objects with no dimensions.
False. You will know nothing at all about any force acting perpendicular to the direction of motion.
False.
False. The forces acting on Earth, such as gravity and electromagnetism, are the same fundamental forces that exist throughout the universe. However, the strengths of these forces can vary depending on the mass and distance of objects involved.
False. Objects sink in water when the buoyant force acting on them is less than the weight of the object. This can happen if the object is denser than water or if it is not shaped in a way to displace enough water to counteract its weight.
false
True
True