Car Pulling Trailer Physics Force Pls. Help Me On Physics...car And Trailer Problem ?

Pls. help me on physics...car and trailer problem ? - car pulling trailer physics force

1000 kg car pulling a trailer of 300 kg. and the car and the trailer with an acceleration of 2.15 m / s ^ 2 in forward direction. Neglecting frictional forces air down into the trailer,
a) the net force on the car
b) the resultant force on the trailer
c) the force exerted by the sidecar
d) the resultant force exerted by the car on the street

pls. Show me all works ... I understand ... my physics exam will have similar problems, so they need to understand all the steps. Thank you.