A particle is moving across a perfectly smooth horizontal surface at a constant velocity. It is acted upon by exactly two constant horizontal forces.
The first force is F1=(250i−120j) N\mathbf{F}_1 = (250\mathbf{i} - 120\mathbf{j})\text{ N}F1=(250i−120j) N.
The second force is F2=(ki+120j) N\mathbf{F}_2 = (k\mathbf{i} + 120\mathbf{j})\text{ N}F2=(ki+120j) N.
Find the value of kkk.
Select your answer from the following:
−250-250−250
−130-130−130
130130130
250250250
136 exam-style questions on CCEA A Level Maths 2.3 Forces and Newton's laws, covering 2.3.1 Forces and Newton's laws, 2.3.2 Forces and Newton's laws, 2.3.3 Forces and Newton's laws, 2.3.4 Forces and Newton's laws, 2.3.5 Forces and Newton's laws, 2.3.6 Forces and Newton's laws, 2.3.7 Forces and Newton's laws, 2.3.8 Forces and Newton's laws, 2.3.9 Forces and Newton's laws, 2.3.10 Forces and Newton's laws, 2.3.11 Forces and Newton's laws, 2.3.12 Forces and Newton's laws, and 2.3 Forces and Newton's laws. Each one has a worked solution and a mark scheme showing where the marks go.