3. Oliver is out with his friends. Misfortune occurs and Oliver and his friends find themselves getting a workout. They apply a cumulative force of 1200 N to push the car 245 m to the nearest fuel station. Determine the work done on the car.

4. A 67-kg person runs up the stairs 15 meters high in 5 minutes at average acceleration of 12 m/s. Determine the power.