Hi could you please answer this question part a and b clearly thank you

Answer the following questions in sentences, using proper physics terminology. 45. There are about 160,000 road accidents in Canada every year. According to the Transportation Safety Board approximately 2800 to 2900 people are killed on Canadian roads each year. [Thinking-6 marks, Communication- 2 marks) (a) Explain the physics principles behind the use of front-seat airbags that inflate during an automobile collision. (T-3, C-2) (b) Describe similar instances in which physics principles are applied to increase safety.(T-3,C-2)