12. The diagram shows the forces acting on a lorry as it travels along a flat road. 5000 N
1200 N
1300 N
IT
5000 N
a
Two of the forces have effects that cancel each other out. Which two? Explain your answer.
b What is the resultant force acting on the lorry? Give its magnitude and direction.
What effect will this resultant force have on the speed at which the lorry is travelling?
12]
[3]