1. A 55-kg swimmer pushes on the pool wall and accelerates at 5 m/s2. The friction experienced by the swimmer is 126 N. What is the magnitude of the force that the swimmer applies on the wall?

2. A person pushes an object of mass 28.9 kg along the floor by applying a force. If the object experiences a friction force of 8.2 N and accelerates at 7.5 m/s2, what is the magnitude of the force exerted by the person?

3. An object has a mass of 94.2 kgon Earth. What is its weight on the moon?

4. A bathroom scale calibrated to earth's gravity shows your mass as 64.7 kg. What will it read on the moon?

5. Two people push a 1,810-kg car to get it started. An acceleration of at least 5.1 m/s2is required to start the car. Assuming both people apply the same magnitude force, how much force will each need to apply if friction between the car and the road is 278 N?