Question

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

Answer 1

11 m/s²

Step-by-step explanation:

Deceleration: This can be defined as the rate of decrease of velocity. The S.I unit of deceleration is m/s².

From the question,

F = md ..................... Equation 1

Where F = Force acting on the dummy towards the rear of the car, m = mass of the dummy, d = deceleration of the dummy.

make d the subject of the equation

d = F/m............... Equation 2

Given: F = 825 N, m = 75 kg.

substitute into equation 2

d = 825/75

d = 11 m/s²

Answer 2

11 m/s^2.

Step-by-step explanation:

Given:

Mass = 75 kg

Force = 825 N

F = m × a

a = 825 ÷ 75

= 11 m/s^2.