Solve the all parts of following question:
Question: A 1000 kg car is on a level floor where the coefficient of friction is 0.8.
Part A: If a child comes along and pushes on the car with a force of 20N, what is the force of static friction keeping the car in place against the child's push?
Part B: A two truck comes along and pulls on the car. What force must the truck exert to move the car?
I need help to find what force the truck must exert to move the car.