A car skids on a horizontal road. It is modelled as a particle for which the only horizontal force is friction of magnitude μR\mu RμR. The car decelerates at 3.43 m s−2^{-2}−2. Take g=9.8g=9.8g=9.8 m s−2^{-2}−2.
Show that the deceleration has magnitude μg\mu gμg.
Find μ\muμ.
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.