AQA AS Paper 1 2019 June — Question 13

Exam BoardAQA
ModuleAS Paper 1 (AS Paper 1)
Year2019
SessionJune
TopicNon-constant acceleration

13 A car, starting from rest, is driven along a horizontal track. The velocity of the car, \(v \mathrm {~m} \mathrm {~s} ^ { - 1 }\), at time \(t\) seconds, is modelled by the equation $$v = 0.48 t ^ { 2 } - 0.024 t ^ { 3 } \text { for } 0 \leq t \leq 15$$ 13
  1. Find the distance the car travels during the first 10 seconds of its journey.
    13
  2. Find the maximum speed of the car.
    Give your answer to three significant figures.
    13
  3. Deduce the range of values of \(t\) for which the car is modelled as decelerating.