Question

A 30 kg girl runs into a light pole at 2 m/s and stops within 0.1 seconds. How much force did the girl experience?

Answer 1

According to problem -

mass= 10 kg;

velocity(v)= 2 m/s;

time(t)= 0.1 sec

Now we can give force(F) by

`F=\text{ ma}`

where a= acceleration

`a=\text{ }(v)/(t)=(2)/(0.1)=20\text{ m/s}^2;`

Now using force formula

F= ma= 30×20= 600 Newton

Therefore the girl will experience a force of 600 N.