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,
Substituting the values, the magnitude of impulse will be
The time can be calculated by the formula
Substituting the values, time will be