physcis mechanics

唔識做呀~有冇幫幫我? show me the steps plssssssssss

1. An object of mass 0.5 kg is pressed against a smooth wall (does not touch the floor) with a 15-N force. The force is inclined at 30 degree. Find the magnitude of the acceleration of the object.

2. Tom gives a sudden push to his tory car of mass 50g. The car runs on the rough floor at an initial velocity of 2ms-1 and stops after travelling for a distance of 4m. Find the average frictional force acting on the car.

Thank you!!!