during a test crash an air bag inflates to stop a dummys forward motion . the dummys mass is 75 kg.if the net force on the dummy is 825 n toward the rear of the car, what is the dummys deceleration
To find the dummy's deceleration, we can use Newton's second law of motion, which states that the net force acting on an object is equal to the product of its mass and acceleration. The formula can be written as:
Net Force = Mass * Acceleration
In this case, the net force acting on the dummy is 825 N, and the mass of the dummy is 75 kg. Rearranging the formula, we can solve for acceleration:
Acceleration = Net Force / Mass
Substituting the given values into the equation:
Acceleration = 825 N / 75 kg
We can now calculate the acceleration using a calculator:
Acceleration ≈ 11 m/s²
Therefore, the dummy's deceleration is approximately 11 m/s².