Question

The driver of a car suddenly applies the brakes hard for 2.6 s. As a result, an average force of 6200 N is exerted on the car to slow it. What is the impulse on the car?

Answer 1

According to the second Newton's low

$F=\frac{\Delta p}{\Delta t}\to\Delta p=F\cdot\Delta t=6200\cdot2.6=16120$ $\frac{kg\cdot m}{s}$