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Calculate the impulse necessary to stop ...

Calculate the impulse necessary to stop a 1500 kg car travelling at `90 km h^(-1)`.

Text Solution

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We are given: `u= 90 km h^(-1) = 90 xx =(5)/(18) = 25 m s^(-1)`.
`v= 0 ms^(-1)` and m= 1500 kg
we know that , impulse = change in momentum= mv-mu= m(u-v)
`implies` Impulse= 1500(0-25)= -37500 Ns
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