Additional exercises III — task. Science CBSE, Class 9.

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A hammer of mass

$500\ g$ , moving at

$50\ m s-1$ , strikes a nail. The nail stops the hammer in a very short time of

$0.01\ s$ . What is the force of the nail on the hammer?

From the Equation of motion -

$I$ , We know that,

$i = i + i i$

From the Newton's second law, We know that,

Acceleration of the hammer

$=$

$m\ s^{-2}$

Force exerted by the hammer on the nail

$=$

$N$

Force exerted by the nail on the hammer

$=$

$N$

(Note: Enter your answers with no decimal places)

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21. Additional exercises III