A car moving at 10 m/s crashes into a barrier and stops in 0.050 s. There is a 20-kg child in the car. Suppose that the child’s velocity is changed by the same amount as the cars in the same time period.
1. What is the average force on the child?
2. Could you lift such a weight with your arm?
3. What is the impulse required to stop the child?
4. Why is it advisable to utilize a proper infant restraint rather than hold a child on your lap?
5. What is the approximate mass of an object whose weight equals the force in part b?