Question 49
HThe Figure shows velocity/time graphs for the same car driven by two drivers, X and Y. Each driver sees a stationary obstacle 55 m ahead at time = 0.
Driver Y is distracted.
Figure
a.[2]
Calculate the deceleration of the car while it is braking.
b.[4]
Determine whether each car stops before it reaches the obstacle.
c.[3]
Calculate the speed of the car driven by driver Y when it reaches the obstacle.
Use the equation
v2−u2=2×a×xv^2 - u^2 = 2 \times a \times xv2−u2=2×a×x
2.5 Stopping and braking distances Questions
126 exam-style questions on Edexcel GCSE Physics 2.5 Stopping and braking distances, covering 2.5.1 Stopping distance and reaction time, 2.5.2 Factors affecting stopping distance, 2.5.3 Dangers of large decelerations, and 2.5.4 Braking distance and initial speed. Each one has a worked solution and a mark scheme showing where the marks go.