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Cachonfinga · Answer 1 · 2023-02-26T02:19:51+0000

Given that the force applied by Jane is F =10000 N. The mass of car is m = 2000 kg and the initial velocity is u = +20 m/s and the final velocity is v = 0 m/s as the brakes are applied.

We have to find the impulse and the time taken.

Impulse can be calculated by the formula,

$I\text{mpulse = m(v-u)}$

Substituting the values, the magnitude of impulse will be

$\begin{gathered} \operatorname{Im}\text{pulse = 2000}*20 \\ =40000\text{ kg m/s} \end{gathered}$

The time can be calculated by the formula

$\operatorname{Im}\text{pulse = Force}* time$

Substituting the values, time will be

$\begin{gathered} \text{time =}\frac{\text{Impulse}}{force} \\ =(40000)/(10000) \\ =4\text{ s} \end{gathered}$

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