Question 7
The seat belt should be allowed to stretch to reduce the force needed to stop the driver to minimize injury. Some cars are fitted with airbags that inflate quickly upon collision and then quickly deflate as shown in the figure below.
a. Explain how these two features help reduce the force exerted on the driver to stop him. [2 points]
b. The total mass of the car and the driver is 750 kg. They are brought to rest at a speed of 10.0 m/s. Calculate the total energy dissipated by the car and the driver upon impact when they come to rest. [2 points]
c. If the car is moving at a lower speed, how will this affect the energy dissipated by the car and the driver upon impact? [1 point]
a. Explain how these two features help reduce the force exerted on the driver to stop him. [2 points]
b. The total mass of the car and the driver is 750 kg. They are brought to rest at a speed of 10.0 m/s. Calculate the total energy dissipated by the car and the driver upon impact when they come to rest. [2 points]
c. If the car is moving at a lower speed, how will this affect the energy dissipated by the car and the driver upon impact? [1 point]