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Heres a question for you, can't work out what formula to use so i need some help.

A mass of 220KG, hits a cylindrical pole into the ground. Just before it hits the velocity of the mass is 10ms-1.

The pole is pushed 0.4 m into the ground, when the mass is droped 5m onto the pole. G = 9.8ms-2.

Show that the average force exerted by the pole on the mass is 27kN.

I just can't work it out! i know its simple but if someone can explain it to me id much appreciate it as I've spent nearly 30 mins on this one question and its only worth 2 marks..

Thanks in advance.

Ben.

A mass of 220KG, hits a cylindrical pole into the ground. Just before it hits the velocity of the mass is 10ms-1.

The pole is pushed 0.4 m into the ground, when the mass is droped 5m onto the pole. G = 9.8ms-2.

Show that the average force exerted by the pole on the mass is 27kN.

I just can't work it out! i know its simple but if someone can explain it to me id much appreciate it as I've spent nearly 30 mins on this one question and its only worth 2 marks..

Thanks in advance.

Ben.

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