There are 8 balls. All of them look similar and feel the same. However, one of the balls is heavier or lighter. How will you find which ball is different? You have a conventional weighing scale available.
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These are regular balls. The other side of the large balance scale will either be lighter or heavier than this side. If it lighter, then I know that the ball with the different weight is lighter and thus on the lighter side of the smaller secondary scale on that side.
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BRubber ball is faster than iron ball
BRubber ball is faster than iron ball(a) Inertia is the name for the tendency of an object in motion to remain in motion, or an object at rest to remain at rest, unless acted upon by a force. This concept was quantified in Newton's First Law of Motion. For example when a car is abruptly accelerated, drivers and passengers may feel as though their bodies are moving backward. In reality, inertia is making the body want to stay in place as the car moves forward.
BRubber ball is faster than iron ball(a) Inertia is the name for the tendency of an object in motion to remain in motion, or an object at rest to remain at rest, unless acted upon by a force. This concept was quantified in Newton's First Law of Motion. For example when a car is abruptly accelerated, drivers and passengers may feel as though their bodies are moving backward. In reality, inertia is making the body want to stay in place as the car moves forward.(b) Yes, both the balls will start rolling due to inertia of motion. The train stops due to brakes. But the balls continue to move in the direction of the train. But the balls will not roll with the same speed. Iron ball will move slower than the rubber ball because it is heavier in weight.
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