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A truck of mass 2xx10^3kg travelling at ...

A truck of mass `2xx10^3kg` travelling at `4m//s` is brought to rest in `2s` when it strikes a wall. What force (assume constant) is exerted by the wall?

Text Solution

Verified by Experts

The correct Answer is:
A, C, D
Using impulse=change in linear momentum

We have, `F*t=mv_f-mv_i=m(v_f-v_i)`
or `F(2)=2xx10^3[0-(-4)]`
or `2F=8xx10^3` or `F=4xx10^3N`
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Knowledge Check

  • A block of mass 4 kg slides on a horizontal frictionless surface with a speed of 2m//s . It is brought to rest in compressing a spring in its path. If the force constant of the spring is 400 N//m , by how much the spring will be compressed

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