Question

Explain why a bullet fired against a glass window makes a clean hole, While a stone thrown at it cracks the glass.

Answer 1

Answer:

When the bullet strikes the glass pane, the part of the glass pane which comes in contact with the bullet immediately shares the large velocity of bullet and makes a hole. While the remaining part of the glass remains at restand is therefore not smashed due to inertia of rest

Answer 2

Answer:

Because the motion of stone is shared by the whole window.