Question

8. A punching machine of mass 100g, moving with an acceleration of 100m/s2 strikes a metal surface.

Calculate the force of the punching machine on the metal surface.

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Answer 1

Answer:

Initial velocity, u= 10m/s

Final velocity, v= 0m/s

Time=0.2 seconds

Acceleration= ?

( as we know that to find acceleration the formula is v-u/ time taken

Acceleration= 0-10/0.2= -50m/s^2

Mass= 100g

( converting into kilograms )

100/1000= 0.1 kg

Then ,

Force = mass×acceleration

F=m×a

= 0.1× -50

= -5 Newton

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

wkt f=mass.acceleration

therefore 100.100=10000gm/s2