why a glass pare of a window is shattered when a flying pebble hits it
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Glass is fragile -- this is because it is brittle in nature and does not have strength unlike metals like iron.
Hence, even the most weakest of forces can cause glass to shatter.
Hence, even the most weakest of forces can cause glass to shatter.
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The flying pebble has a high velocity. When it strikes the glass pane, the velocity becomes zero in a very short interval of time i.e., the rate of change of momentum is large. Therefore, the force applied on the glass pane is large and so, the glass pane shatters.
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