Deformation of Solids Question

[Dania]

Can someone please help me on the question stated below. I have looked at the answer in the mark scheme but it's too brief. I was wondering if someone could explain it to me more thoroughly. The question carries 3 marks and it's from an AS CIE Physics paper.

Q. A hard and a soft ball, with equal masses and volumes, are thrown at a glass window. The ball hits the window at the same speed. Suggest why the hard ball is more likely than the soft ball to break the glass window.

[elemis]

I havent done this topic yet

The soft ball would deform upon impact and hence absorb more of the force.

The hard ball cannot deform as much and the most of the force is directed towards the glass window.

A crappy answer but it gives you an idea

Read the examiner's report if you want a better explanation.

[Dania]

The mark scheme explained it in terms of kinetic energy being converted into strain energy. I got a little confused. But thanks, I'll have a look at the examiner's report right now.

[nid404]

Did you get it yet?

[Dania]

No, Garfield. Not yet. I started studying bio instead.

[nid404]

A hard ball(rigid) will not undergo as much deformation. The time for impulse with the glass for a rigid body will be over a shorter period of time compared to a soft body. The force is given by rate of change of momentum. The force applied by the hard ball on collision will be much more and hence it is more likely to cause the glass to break.

[elemis]

A hard ball(rigid) will not undergo as much deformation. The time for impulse with the glass for a rigid body will be over a shorter period of time compared to a soft body. The force is given by rate of change of momentum. The force applied by the hard ball on collision will be much more and hence it is more likely to cause the glass to break.

Classic answer.

[nid404]

lol I hope she understood

[elemis]

lol I hope she understood

I didnt There's not a word of english in that para. 

[nid404]

I didnt There's not a word of english in that para. 

=.=

[elemis]

=.=

SPAM ? 

[Dania]

I did understand. Thank you, Garfield

[nid404]

Glad

You're welcome