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2 Motion and forces

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Question 23

One of four journeys made by a delivery lorry has a stopping distance of 65 m. When the lorry travels at speed $v\,$ and the driver's reaction time is $t$ , its thinking distance is 6.5 m and its braking distance is 26 m. The lorry's mass and braking force are unchanged for all four journeys. The conditions for the journeys are shown in the table.

Journey	Speed	Driver's reaction time
P	$1.5 v$	$t$
Q	$1.5 v$	$23t\dfrac{2}{3}t$
R	$2 v$	$t$
S	$v$	$2 t$

What is the label of the journey with this stopping distance?

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Markscheme

2 Motion and forces Questions

GCSE
Physics
2 Motion and forces

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