1)- Why does a child in a wagon fall backward when you give the wagon a sharp pull? 2)- Use Newton's Laws to explain the importance of car headrests and seat belts. 3)- Why does a boat move backwards when you dive into the water from the front of the boat?

#2. Why does a child in a wagon fall backward when you give the wagon a sharp pull? [C-2] #3. Use Newton's Laws to explain the importance of car headrests and seat belts. [C-2] #4. Why does a boat move backwards when you dive into the water from the front of the boat? [C-2]