Momentum & Impulse in 2D Video Lessons

Concept

# Problem: The purpose of an air bag in an auto is toa) reduce your speed just before a collision. b) reduce the need for good brakes on your car. c) increase the force applied to you during a collision. d) increase your body's stopping time during a collision.

###### FREE Expert Solution

To solve this problem, we need to remember the concept of impulse.

Impulse is a change in momentum given by:

$\overline{){\mathbf{∆}}{\mathbf{p}}{\mathbf{=}}{\mathbf{F}}{\mathbf{∆}}{\mathbf{t}}}$

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###### Problem Details

The purpose of an air bag in an auto is to

a) reduce your speed just before a collision.

b) reduce the need for good brakes on your car.

c) increase the force applied to you during a collision.

d) increase your body's stopping time during a collision.