Question

during a test crash an airbag inflates to stop a dummies forward motion. the dummies mass is 75 kg. if the net force on the dummy is 825N toward the rear of the car what is the dummies deceleration

Answer 1

use Force=Mass x Acceleration (newtons second law states force is directly proportional to the acceleration) so you can say that the force is negative and solve for Acceleration.

Answer 2

Dummies deceleration is 11m/s²

Step-by-step explanation:

According to Newton's second law, the relationship between the force applied to an object, its mass, and the acceleration (or deceleration) caused, is given by:

`F=ma`

Solving for acceleration:

`a=(F)/(m)`

If we plug in the vales (taking into account the negative sign of the force, as its directed backwards):

`a=(-825N)/(75kg)=-11m/s^2`

`a=-11m/s^2`

Deceleration is simply the magnitude of negative acceleration. Therefore, dummies deceleration is 11m/s²